EVP support for wrapping algorithms.
Add support for key wrap algorithms via EVP interface. Generalise AES wrap algorithm and add to modes, making existing AES wrap algorithm a special case. Move test code to evptests.txt
This commit is contained in:
Dr. Stephen Henson
parent
415ece7301
commit
97cf1f6c28
13 changed files with 420 additions and 197 deletions
6
CHANGES
6
CHANGES
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@ -4,6 +4,12 @@
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Changes between 1.0.x and 1.1.0 [xx XXX xxxx]
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*) Add EVP support for key wrapping algorithms, to avoid problems with
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existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
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the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
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algorithms and include tests cases.
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[Steve Henson]
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*) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
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enveloped data.
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[Steve Henson]
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@ -53,207 +53,18 @@
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#include "cryptlib.h"
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#include <openssl/aes.h>
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#include <openssl/bio.h>
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static const unsigned char default_iv[] = {
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0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6,
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};
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#include <openssl/modes.h>
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int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
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unsigned char *out,
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const unsigned char *in, unsigned int inlen)
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{
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unsigned char *A, B[16], *R;
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unsigned int i, j, t;
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if ((inlen & 0x7) || (inlen < 8))
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return -1;
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A = B;
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t = 1;
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memcpy(out + 8, in, inlen);
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if (!iv)
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iv = default_iv;
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memcpy(A, iv, 8);
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for (j = 0; j < 6; j++)
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{
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R = out + 8;
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for (i = 0; i < inlen; i += 8, t++, R += 8)
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{
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memcpy(B + 8, R, 8);
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AES_encrypt(B, B, key);
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A[7] ^= (unsigned char)(t & 0xff);
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if (t > 0xff)
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{
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A[6] ^= (unsigned char)((t >> 8) & 0xff);
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A[5] ^= (unsigned char)((t >> 16) & 0xff);
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A[4] ^= (unsigned char)((t >> 24) & 0xff);
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}
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memcpy(R, B + 8, 8);
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}
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}
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memcpy(out, A, 8);
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return inlen + 8;
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return CRYPTO_128_wrap(key, iv, out, in, inlen, (block128_f)AES_encrypt);
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}
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int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
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unsigned char *out,
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const unsigned char *in, unsigned int inlen)
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{
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unsigned char *A, B[16], *R;
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unsigned int i, j, t;
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inlen -= 8;
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if (inlen & 0x7)
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return -1;
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if (inlen < 8)
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return -1;
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A = B;
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t = 6 * (inlen >> 3);
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memcpy(A, in, 8);
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memcpy(out, in + 8, inlen);
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for (j = 0; j < 6; j++)
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{
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R = out + inlen - 8;
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for (i = 0; i < inlen; i += 8, t--, R -= 8)
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{
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A[7] ^= (unsigned char)(t & 0xff);
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if (t > 0xff)
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{
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A[6] ^= (unsigned char)((t >> 8) & 0xff);
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A[5] ^= (unsigned char)((t >> 16) & 0xff);
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A[4] ^= (unsigned char)((t >> 24) & 0xff);
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}
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memcpy(B + 8, R, 8);
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AES_decrypt(B, B, key);
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memcpy(R, B + 8, 8);
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}
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}
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if (!iv)
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iv = default_iv;
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if (memcmp(A, iv, 8))
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{
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OPENSSL_cleanse(out, inlen);
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return 0;
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}
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return inlen;
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return CRYPTO_128_unwrap(key, iv, out, in, inlen, (block128_f)AES_decrypt);
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}
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#ifdef AES_WRAP_TEST
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int AES_wrap_unwrap_test(const unsigned char *kek, int keybits,
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const unsigned char *iv,
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const unsigned char *eout,
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const unsigned char *key, int keylen)
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{
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unsigned char *otmp = NULL, *ptmp = NULL;
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int r, ret = 0;
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AES_KEY wctx;
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otmp = OPENSSL_malloc(keylen + 8);
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ptmp = OPENSSL_malloc(keylen);
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if (!otmp || !ptmp)
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return 0;
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if (AES_set_encrypt_key(kek, keybits, &wctx))
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goto err;
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r = AES_wrap_key(&wctx, iv, otmp, key, keylen);
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if (r <= 0)
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goto err;
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if (eout && memcmp(eout, otmp, keylen))
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goto err;
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if (AES_set_decrypt_key(kek, keybits, &wctx))
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goto err;
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r = AES_unwrap_key(&wctx, iv, ptmp, otmp, r);
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if (memcmp(key, ptmp, keylen))
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goto err;
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ret = 1;
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err:
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if (otmp)
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OPENSSL_free(otmp);
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if (ptmp)
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OPENSSL_free(ptmp);
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return ret;
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}
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int main(int argc, char **argv)
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{
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static const unsigned char kek[] = {
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
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0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
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};
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static const unsigned char key[] = {
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0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
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0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff,
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
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0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
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};
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static const unsigned char e1[] = {
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0x1f, 0xa6, 0x8b, 0x0a, 0x81, 0x12, 0xb4, 0x47,
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0xae, 0xf3, 0x4b, 0xd8, 0xfb, 0x5a, 0x7b, 0x82,
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0x9d, 0x3e, 0x86, 0x23, 0x71, 0xd2, 0xcf, 0xe5
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};
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static const unsigned char e2[] = {
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0x96, 0x77, 0x8b, 0x25, 0xae, 0x6c, 0xa4, 0x35,
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0xf9, 0x2b, 0x5b, 0x97, 0xc0, 0x50, 0xae, 0xd2,
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0x46, 0x8a, 0xb8, 0xa1, 0x7a, 0xd8, 0x4e, 0x5d
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};
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static const unsigned char e3[] = {
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0x64, 0xe8, 0xc3, 0xf9, 0xce, 0x0f, 0x5b, 0xa2,
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0x63, 0xe9, 0x77, 0x79, 0x05, 0x81, 0x8a, 0x2a,
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0x93, 0xc8, 0x19, 0x1e, 0x7d, 0x6e, 0x8a, 0xe7
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};
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static const unsigned char e4[] = {
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0x03, 0x1d, 0x33, 0x26, 0x4e, 0x15, 0xd3, 0x32,
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0x68, 0xf2, 0x4e, 0xc2, 0x60, 0x74, 0x3e, 0xdc,
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0xe1, 0xc6, 0xc7, 0xdd, 0xee, 0x72, 0x5a, 0x93,
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0x6b, 0xa8, 0x14, 0x91, 0x5c, 0x67, 0x62, 0xd2
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};
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static const unsigned char e5[] = {
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0xa8, 0xf9, 0xbc, 0x16, 0x12, 0xc6, 0x8b, 0x3f,
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0xf6, 0xe6, 0xf4, 0xfb, 0xe3, 0x0e, 0x71, 0xe4,
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0x76, 0x9c, 0x8b, 0x80, 0xa3, 0x2c, 0xb8, 0x95,
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0x8c, 0xd5, 0xd1, 0x7d, 0x6b, 0x25, 0x4d, 0xa1
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};
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static const unsigned char e6[] = {
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0x28, 0xc9, 0xf4, 0x04, 0xc4, 0xb8, 0x10, 0xf4,
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0xcb, 0xcc, 0xb3, 0x5c, 0xfb, 0x87, 0xf8, 0x26,
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0x3f, 0x57, 0x86, 0xe2, 0xd8, 0x0e, 0xd3, 0x26,
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0xcb, 0xc7, 0xf0, 0xe7, 0x1a, 0x99, 0xf4, 0x3b,
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0xfb, 0x98, 0x8b, 0x9b, 0x7a, 0x02, 0xdd, 0x21
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};
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AES_KEY wctx, xctx;
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int ret;
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ret = AES_wrap_unwrap_test(kek, 128, NULL, e1, key, 16);
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fprintf(stderr, "Key test result %d\n", ret);
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ret = AES_wrap_unwrap_test(kek, 192, NULL, e2, key, 16);
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fprintf(stderr, "Key test result %d\n", ret);
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ret = AES_wrap_unwrap_test(kek, 256, NULL, e3, key, 16);
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fprintf(stderr, "Key test result %d\n", ret);
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ret = AES_wrap_unwrap_test(kek, 192, NULL, e4, key, 24);
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fprintf(stderr, "Key test result %d\n", ret);
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ret = AES_wrap_unwrap_test(kek, 256, NULL, e5, key, 24);
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fprintf(stderr, "Key test result %d\n", ret);
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ret = AES_wrap_unwrap_test(kek, 256, NULL, e6, key, 32);
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fprintf(stderr, "Key test result %d\n", ret);
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}
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#endif
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@ -93,6 +93,7 @@ void OpenSSL_add_all_ciphers(void)
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EVP_add_cipher(EVP_des_ecb());
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EVP_add_cipher(EVP_des_ede());
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EVP_add_cipher(EVP_des_ede3());
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EVP_add_cipher(EVP_des_ede3_wrap());
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#endif
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#ifndef OPENSSL_NO_RC4
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@ -173,6 +174,7 @@ void OpenSSL_add_all_ciphers(void)
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EVP_add_cipher(EVP_aes_128_gcm());
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EVP_add_cipher(EVP_aes_128_xts());
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EVP_add_cipher(EVP_aes_128_ccm());
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EVP_add_cipher(EVP_aes_128_wrap());
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EVP_add_cipher_alias(SN_aes_128_cbc,"AES128");
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EVP_add_cipher_alias(SN_aes_128_cbc,"aes128");
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EVP_add_cipher(EVP_aes_192_ecb());
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@ -184,6 +186,7 @@ void OpenSSL_add_all_ciphers(void)
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EVP_add_cipher(EVP_aes_192_ctr());
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EVP_add_cipher(EVP_aes_192_gcm());
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EVP_add_cipher(EVP_aes_192_ccm());
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EVP_add_cipher(EVP_aes_192_wrap());
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EVP_add_cipher_alias(SN_aes_192_cbc,"AES192");
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EVP_add_cipher_alias(SN_aes_192_cbc,"aes192");
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EVP_add_cipher(EVP_aes_256_ecb());
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@ -196,6 +199,7 @@ void OpenSSL_add_all_ciphers(void)
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EVP_add_cipher(EVP_aes_256_gcm());
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EVP_add_cipher(EVP_aes_256_xts());
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EVP_add_cipher(EVP_aes_256_ccm());
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EVP_add_cipher(EVP_aes_256_wrap());
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EVP_add_cipher_alias(SN_aes_256_cbc,"AES256");
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EVP_add_cipher_alias(SN_aes_256_cbc,"aes256");
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#if !defined(OPENSSL_NO_SHA) && !defined(OPENSSL_NO_SHA1)
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@ -1880,4 +1880,102 @@ BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
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BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
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BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
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typedef struct
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{
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union { double align; AES_KEY ks; } ks;
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/* Indicates if IV has been set */
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unsigned char *iv;
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} EVP_AES_WRAP_CTX;
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static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc)
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{
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EVP_AES_WRAP_CTX *wctx = ctx->cipher_data;
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if (!iv && !key)
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return 1;
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if (key)
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{
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if (ctx->encrypt)
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AES_set_encrypt_key(key, ctx->key_len * 8, &wctx->ks.ks);
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else
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AES_set_decrypt_key(key, ctx->key_len * 8, &wctx->ks.ks);
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if (!iv)
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wctx->iv = NULL;
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}
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if (iv)
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{
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memcpy(ctx->iv, iv, 8);
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wctx->iv = ctx->iv;
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}
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return 1;
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}
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static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inlen)
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{
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EVP_AES_WRAP_CTX *wctx = ctx->cipher_data;
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size_t rv;
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if (inlen % 8)
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return 0;
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if (!out)
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{
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if (ctx->encrypt)
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return inlen + 8;
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else
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return inlen - 8;
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}
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if (!in)
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return 0;
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if (ctx->encrypt)
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rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv, out, in, inlen,
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(block128_f)AES_encrypt);
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else
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rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv, out, in, inlen,
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(block128_f)AES_decrypt);
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return rv ? (int)rv : -1;
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}
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#define WRAP_FLAGS (EVP_CIPH_WRAP_MODE \
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| EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
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| EVP_CIPH_ALWAYS_CALL_INIT)
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static const EVP_CIPHER aes_128_wrap = {
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NID_id_aes128_wrap,
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8, 16, 8, WRAP_FLAGS,
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aes_wrap_init_key, aes_wrap_cipher,
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NULL,
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sizeof(EVP_AES_WRAP_CTX),
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NULL,NULL,NULL,NULL };
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const EVP_CIPHER *EVP_aes_128_wrap(void)
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{
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return &aes_128_wrap;
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}
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static const EVP_CIPHER aes_192_wrap = {
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NID_id_aes192_wrap,
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8, 24, 8, WRAP_FLAGS,
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aes_wrap_init_key, aes_wrap_cipher,
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NULL,
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sizeof(EVP_AES_WRAP_CTX),
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NULL,NULL,NULL,NULL };
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const EVP_CIPHER *EVP_aes_192_wrap(void)
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{
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return &aes_192_wrap;
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}
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static const EVP_CIPHER aes_256_wrap = {
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NID_id_aes256_wrap,
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8, 32, 8, WRAP_FLAGS,
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aes_wrap_init_key, aes_wrap_cipher,
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NULL,
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sizeof(EVP_AES_WRAP_CTX),
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NULL,NULL,NULL,NULL };
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const EVP_CIPHER *EVP_aes_256_wrap(void)
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{
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return &aes_256_wrap;
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}
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#endif
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@ -374,4 +374,111 @@ const EVP_CIPHER *EVP_des_ede3(void)
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{
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return &des_ede3_ecb;
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}
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#ifndef OPENSSL_NO_SHA
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#include <openssl/sha.h>
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static const unsigned char wrap_iv[8] = {0x4a,0xdd,0xa2,0x2c,0x79,0xe8,0x21,0x05};
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static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl)
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{
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unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
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int rv = -1;
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if (inl < 24)
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return -1;
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if (!out)
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return inl - 16;
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memcpy(ctx->iv, wrap_iv, 8);
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/* Decrypt first block which will end up as icv */
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des_ede_cbc_cipher(ctx, icv, in, 8);
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/* Decrypt central blocks */
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/* If decrypting in place move whole output along a block
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* so the next des_ede_cbc_cipher is in place.
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*/
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if (out == in)
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{
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memmove(out, out + 8, inl - 8);
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in -= 8;
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}
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des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
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/* Decrypt final block which will be IV */
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des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
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/* Reverse order of everything */
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BUF_reverse(icv, NULL, 8);
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BUF_reverse(out, NULL, inl - 16);
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BUF_reverse(ctx->iv, iv, 8);
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/* Decrypt again using new IV */
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des_ede_cbc_cipher(ctx, out, out, inl - 16);
|
||||
des_ede_cbc_cipher(ctx, icv, icv, 8);
|
||||
/* Work out SHA1 hash of first portion */
|
||||
SHA1(out, inl - 16, sha1tmp);
|
||||
|
||||
if (!CRYPTO_memcmp(sha1tmp, icv, 8))
|
||||
rv = inl - 16;
|
||||
OPENSSL_cleanse(icv, 8);
|
||||
OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
|
||||
OPENSSL_cleanse(iv, 8);
|
||||
OPENSSL_cleanse(ctx->iv, 8);
|
||||
if (rv == -1)
|
||||
OPENSSL_cleanse(out, inl - 16);
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
||||
const unsigned char *in, size_t inl)
|
||||
{
|
||||
unsigned char sha1tmp[SHA_DIGEST_LENGTH];
|
||||
if (!out)
|
||||
return inl + 16;
|
||||
/* Copy input to output buffer + 8 so we have space for IV */
|
||||
memmove(out + 8, in, inl);
|
||||
/* Work out ICV */
|
||||
SHA1(in, inl, sha1tmp);
|
||||
memcpy(out + inl + 8, sha1tmp, 8);
|
||||
OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
|
||||
/* Generate random IV */
|
||||
RAND_bytes(ctx->iv, 8);
|
||||
memcpy(out, ctx->iv, 8);
|
||||
/* Encrypt everything after IV in place */
|
||||
des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
|
||||
BUF_reverse(out, NULL, inl + 16);
|
||||
memcpy(ctx->iv, wrap_iv, 8);
|
||||
des_ede_cbc_cipher(ctx, out, out, inl + 16);
|
||||
return inl + 16;
|
||||
}
|
||||
|
||||
static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
||||
const unsigned char *in, size_t inl)
|
||||
{
|
||||
/* Sanity check input length: we typically only wrap keys
|
||||
* so EVP_MAXCHUNK is more than will ever be needed. Also
|
||||
* input length must be a multiple of 8 bits.
|
||||
*/
|
||||
if (inl >= EVP_MAXCHUNK || inl % 8)
|
||||
return -1;
|
||||
if (ctx->encrypt)
|
||||
return des_ede3_wrap(ctx, out, in, inl);
|
||||
else
|
||||
return des_ede3_unwrap(ctx, out, in, inl);
|
||||
}
|
||||
|
||||
static const EVP_CIPHER des3_wrap = {
|
||||
NID_id_smime_alg_CMS3DESwrap,
|
||||
8, 24, 0,
|
||||
EVP_CIPH_WRAP_MODE|EVP_CIPH_CUSTOM_IV|EVP_CIPH_FLAG_CUSTOM_CIPHER,
|
||||
des_ede3_init_key, des_ede3_wrap_cipher,
|
||||
NULL,
|
||||
sizeof(DES_EDE_KEY),
|
||||
NULL,NULL,NULL,NULL };
|
||||
|
||||
|
||||
const EVP_CIPHER *EVP_des_ede3_wrap(void)
|
||||
{
|
||||
return &des3_wrap;
|
||||
}
|
||||
|
||||
# endif
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -333,6 +333,7 @@ struct evp_cipher_st
|
|||
#define EVP_CIPH_GCM_MODE 0x6
|
||||
#define EVP_CIPH_CCM_MODE 0x7
|
||||
#define EVP_CIPH_XTS_MODE 0x10001
|
||||
#define EVP_CIPH_WRAP_MODE 0x10002
|
||||
#define EVP_CIPH_MODE 0xF0007
|
||||
/* Set if variable length cipher */
|
||||
#define EVP_CIPH_VARIABLE_LENGTH 0x8
|
||||
|
|
@ -364,6 +365,13 @@ struct evp_cipher_st
|
|||
#define EVP_CIPH_FLAG_CUSTOM_CIPHER 0x100000
|
||||
#define EVP_CIPH_FLAG_AEAD_CIPHER 0x200000
|
||||
|
||||
/* Cipher context flag to indicate we can handle
|
||||
* wrap mode: if allowed in older applications it could
|
||||
* overflow buffers.
|
||||
*/
|
||||
|
||||
#define EVP_CIPHER_CTX_FLAG_WRAP_ALLOW 0x1
|
||||
|
||||
/* ctrl() values */
|
||||
|
||||
#define EVP_CTRL_INIT 0x0
|
||||
|
|
@ -754,6 +762,7 @@ const EVP_CIPHER *EVP_des_cbc(void);
|
|||
const EVP_CIPHER *EVP_des_ede_cbc(void);
|
||||
const EVP_CIPHER *EVP_des_ede3_cbc(void);
|
||||
const EVP_CIPHER *EVP_desx_cbc(void);
|
||||
const EVP_CIPHER *EVP_des_ede3_wrap(void);
|
||||
/* This should now be supported through the dev_crypto ENGINE. But also, why are
|
||||
* rc4 and md5 declarations made here inside a "NO_DES" precompiler branch? */
|
||||
#if 0
|
||||
|
|
@ -820,6 +829,7 @@ const EVP_CIPHER *EVP_aes_128_ctr(void);
|
|||
const EVP_CIPHER *EVP_aes_128_ccm(void);
|
||||
const EVP_CIPHER *EVP_aes_128_gcm(void);
|
||||
const EVP_CIPHER *EVP_aes_128_xts(void);
|
||||
const EVP_CIPHER *EVP_aes_128_wrap(void);
|
||||
const EVP_CIPHER *EVP_aes_192_ecb(void);
|
||||
const EVP_CIPHER *EVP_aes_192_cbc(void);
|
||||
const EVP_CIPHER *EVP_aes_192_cfb1(void);
|
||||
|
|
@ -830,6 +840,7 @@ const EVP_CIPHER *EVP_aes_192_ofb(void);
|
|||
const EVP_CIPHER *EVP_aes_192_ctr(void);
|
||||
const EVP_CIPHER *EVP_aes_192_ccm(void);
|
||||
const EVP_CIPHER *EVP_aes_192_gcm(void);
|
||||
const EVP_CIPHER *EVP_aes_192_wrap(void);
|
||||
const EVP_CIPHER *EVP_aes_256_ecb(void);
|
||||
const EVP_CIPHER *EVP_aes_256_cbc(void);
|
||||
const EVP_CIPHER *EVP_aes_256_cfb1(void);
|
||||
|
|
@ -841,6 +852,7 @@ const EVP_CIPHER *EVP_aes_256_ctr(void);
|
|||
const EVP_CIPHER *EVP_aes_256_ccm(void);
|
||||
const EVP_CIPHER *EVP_aes_256_gcm(void);
|
||||
const EVP_CIPHER *EVP_aes_256_xts(void);
|
||||
const EVP_CIPHER *EVP_aes_256_wrap(void);
|
||||
# if !defined(OPENSSL_NO_SHA) && !defined(OPENSSL_NO_SHA1)
|
||||
const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void);
|
||||
const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void);
|
||||
|
|
@ -1441,6 +1453,7 @@ void ERR_load_EVP_strings(void);
|
|||
#define EVP_R_UNSUPPORTED_PRF 125
|
||||
#define EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM 118
|
||||
#define EVP_R_UNSUPPORTED_SALT_TYPE 126
|
||||
#define EVP_R_WRAP_MODE_NOT_ALLOWED 170
|
||||
#define EVP_R_WRONG_FINAL_BLOCK_LENGTH 109
|
||||
#define EVP_R_WRONG_PUBLIC_KEY_TYPE 110
|
||||
|
||||
|
|
|
|||
|
|
@ -174,7 +174,8 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *imp
|
|||
ctx->cipher_data = NULL;
|
||||
}
|
||||
ctx->key_len = cipher->key_len;
|
||||
ctx->flags = 0;
|
||||
/* Preserve wrap enable flag, zero everything else */
|
||||
ctx->flags &= EVP_CIPHER_CTX_FLAG_WRAP_ALLOW;
|
||||
if(ctx->cipher->flags & EVP_CIPH_CTRL_INIT)
|
||||
{
|
||||
if(!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL))
|
||||
|
|
@ -197,6 +198,13 @@ skip_to_init:
|
|||
|| ctx->cipher->block_size == 8
|
||||
|| ctx->cipher->block_size == 16);
|
||||
|
||||
if(!(ctx->flags & EVP_CIPHER_CTX_FLAG_WRAP_ALLOW)
|
||||
&& EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_WRAP_MODE)
|
||||
{
|
||||
EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_WRAP_MODE_NOT_ALLOWED);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if(!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) {
|
||||
switch(EVP_CIPHER_CTX_mode(ctx)) {
|
||||
|
||||
|
|
@ -230,6 +238,7 @@ skip_to_init:
|
|||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
if(key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) {
|
||||
if(!ctx->cipher->init(ctx,key,iv,enc)) return 0;
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
/* crypto/evp/evp_err.c */
|
||||
/* ====================================================================
|
||||
* Copyright (c) 1999-2012 The OpenSSL Project. All rights reserved.
|
||||
* Copyright (c) 1999-2013 The OpenSSL Project. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
|
|
@ -222,6 +222,7 @@ static ERR_STRING_DATA EVP_str_reasons[]=
|
|||
{ERR_REASON(EVP_R_UNSUPPORTED_PRF) ,"unsupported prf"},
|
||||
{ERR_REASON(EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM),"unsupported private key algorithm"},
|
||||
{ERR_REASON(EVP_R_UNSUPPORTED_SALT_TYPE) ,"unsupported salt type"},
|
||||
{ERR_REASON(EVP_R_WRAP_MODE_NOT_ALLOWED) ,"wrap mode not allowed"},
|
||||
{ERR_REASON(EVP_R_WRONG_FINAL_BLOCK_LENGTH),"wrong final block length"},
|
||||
{ERR_REASON(EVP_R_WRONG_PUBLIC_KEY_TYPE) ,"wrong public key type"},
|
||||
{0,NULL}
|
||||
|
|
|
|||
|
|
@ -164,6 +164,7 @@ static void test1(const EVP_CIPHER *c,const unsigned char *key,int kn,
|
|||
test1_exit(5);
|
||||
}
|
||||
EVP_CIPHER_CTX_init(&ctx);
|
||||
EVP_CIPHER_CTX_set_flags(&ctx,EVP_CIPHER_CTX_FLAG_WRAP_ALLOW);
|
||||
if (encdec != 0)
|
||||
{
|
||||
if (mode == EVP_CIPH_GCM_MODE)
|
||||
|
|
@ -232,6 +233,15 @@ static void test1(const EVP_CIPHER *c,const unsigned char *key,int kn,
|
|||
test1_exit(13);
|
||||
}
|
||||
}
|
||||
else if (mode == EVP_CIPH_WRAP_MODE)
|
||||
{
|
||||
if(!EVP_EncryptInit_ex(&ctx,c,NULL,key,in ? iv : NULL))
|
||||
{
|
||||
fprintf(stderr,"EncryptInit failed\n");
|
||||
ERR_print_errors_fp(stderr);
|
||||
test1_exit(10);
|
||||
}
|
||||
}
|
||||
else if(!EVP_EncryptInit_ex(&ctx,c,NULL,key,iv))
|
||||
{
|
||||
fprintf(stderr,"EncryptInit failed\n");
|
||||
|
|
@ -363,6 +373,15 @@ static void test1(const EVP_CIPHER *c,const unsigned char *key,int kn,
|
|||
test1_exit(13);
|
||||
}
|
||||
}
|
||||
else if (mode == EVP_CIPH_WRAP_MODE)
|
||||
{
|
||||
if(!EVP_DecryptInit_ex(&ctx,c,NULL,key,in ? iv : NULL))
|
||||
{
|
||||
fprintf(stderr,"EncryptInit failed\n");
|
||||
ERR_print_errors_fp(stderr);
|
||||
test1_exit(10);
|
||||
}
|
||||
}
|
||||
else if(!EVP_DecryptInit_ex(&ctx,c,NULL,key,iv))
|
||||
{
|
||||
fprintf(stderr,"DecryptInit failed\n");
|
||||
|
|
@ -505,7 +524,7 @@ int main(int argc,char **argv)
|
|||
perror(szTestFile);
|
||||
EXIT(2);
|
||||
}
|
||||
|
||||
ERR_load_crypto_strings();
|
||||
/* Load up the software EVP_CIPHER and EVP_MD definitions */
|
||||
OpenSSL_add_all_ciphers();
|
||||
OpenSSL_add_all_digests();
|
||||
|
|
|
|||
|
|
@ -394,3 +394,10 @@ aes-128-xts:fffefdfcfbfaf9f8f7f6f5f4f3f2f1f0bfbebdbcbbbab9b8b7b6b5b4b3b2b1b0:9a7
|
|||
aes-128-xts:fffefdfcfbfaf9f8f7f6f5f4f3f2f1f0bfbebdbcbbbab9b8b7b6b5b4b3b2b1b0:9a785634120000000000000000000000:000102030405060708090a0b0c0d0e0f101112:e5df1351c0544ba1350b3363cd8ef4beedbf9d
|
||||
aes-128-xts:fffefdfcfbfaf9f8f7f6f5f4f3f2f1f0bfbebdbcbbbab9b8b7b6b5b4b3b2b1b0:9a785634120000000000000000000000:000102030405060708090a0b0c0d0e0f10111213:9d84c813f719aa2c7be3f66171c7c5c2edbf9dac
|
||||
aes-128-xts:e0e1e2e3e4e5e6e7e8e9eaebecedeeefc0c1c2c3c4c5c6c7c8c9cacbcccdcecf:21436587a90000000000000000000000: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: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
|
||||
# AES wrap tests from RFC3394
|
||||
id-aes128-wrap:000102030405060708090A0B0C0D0E0F::00112233445566778899AABBCCDDEEFF:1FA68B0A8112B447AEF34BD8FB5A7B829D3E862371D2CFE5
|
||||
id-aes192-wrap:000102030405060708090A0B0C0D0E0F1011121314151617::00112233445566778899AABBCCDDEEFF:96778B25AE6CA435F92B5B97C050AED2468AB8A17AD84E5D
|
||||
id-aes256-wrap:000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F::00112233445566778899AABBCCDDEEFF:64E8C3F9CE0F5BA263E9777905818A2A93C8191E7D6E8AE7
|
||||
id-aes192-wrap:000102030405060708090A0B0C0D0E0F1011121314151617::00112233445566778899AABBCCDDEEFF0001020304050607:031D33264E15D33268F24EC260743EDCE1C6C7DDEE725A936BA814915C6762D2
|
||||
id-aes256-wrap:000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F::00112233445566778899AABBCCDDEEFF0001020304050607:A8F9BC1612C68B3FF6E6F4FBE30E71E4769C8B80A32CB8958CD5D17D6B254DA1
|
||||
id-aes256-wrap:000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F::00112233445566778899AABBCCDDEEFF000102030405060708090A0B0C0D0E0F:28C9F404C4B810F4CBCCB35CFB87F8263F5786E2D80ED326CBC7F0E71A99F43BFB988B9B7A02DD21
|
||||
|
|
|
|||
|
|
@ -22,9 +22,9 @@ APPS=
|
|||
|
||||
LIB=$(TOP)/libcrypto.a
|
||||
LIBSRC= cbc128.c ctr128.c cts128.c cfb128.c ofb128.c gcm128.c \
|
||||
ccm128.c xts128.c
|
||||
ccm128.c xts128.c wrap128.c
|
||||
LIBOBJ= cbc128.o ctr128.o cts128.o cfb128.o ofb128.o gcm128.o \
|
||||
ccm128.o xts128.o $(MODES_ASM_OBJ)
|
||||
ccm128.o xts128.o wrap128.o $(MODES_ASM_OBJ)
|
||||
|
||||
SRC= $(LIBSRC)
|
||||
|
||||
|
|
|
|||
|
|
@ -133,3 +133,11 @@ typedef struct xts128_context XTS128_CONTEXT;
|
|||
|
||||
int CRYPTO_xts128_encrypt(const XTS128_CONTEXT *ctx, const unsigned char iv[16],
|
||||
const unsigned char *inp, unsigned char *out, size_t len, int enc);
|
||||
|
||||
size_t CRYPTO_128_wrap(void *key, const unsigned char *iv,
|
||||
unsigned char *out,
|
||||
const unsigned char *in, size_t inlen, block128_f block);
|
||||
|
||||
size_t CRYPTO_128_unwrap(void *key, const unsigned char *iv,
|
||||
unsigned char *out,
|
||||
const unsigned char *in, size_t inlen, block128_f block);
|
||||
|
|
|
|||
140
crypto/modes/wrap128.c
Normal file
140
crypto/modes/wrap128.c
Normal file
|
|
@ -0,0 +1,140 @@
|
|||
/* crypto/modes/wrap128.c */
|
||||
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
|
||||
* project.
|
||||
*/
|
||||
/* ====================================================================
|
||||
* Copyright (c) 2013 The OpenSSL Project. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
*
|
||||
* 3. All advertising materials mentioning features or use of this
|
||||
* software must display the following acknowledgment:
|
||||
* "This product includes software developed by the OpenSSL Project
|
||||
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
||||
*
|
||||
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
||||
* endorse or promote products derived from this software without
|
||||
* prior written permission. For written permission, please contact
|
||||
* licensing@OpenSSL.org.
|
||||
*
|
||||
* 5. Products derived from this software may not be called "OpenSSL"
|
||||
* nor may "OpenSSL" appear in their names without prior written
|
||||
* permission of the OpenSSL Project.
|
||||
*
|
||||
* 6. Redistributions of any form whatsoever must retain the following
|
||||
* acknowledgment:
|
||||
* "This product includes software developed by the OpenSSL Project
|
||||
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
||||
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
||||
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
* ====================================================================
|
||||
*/
|
||||
|
||||
#include "cryptlib.h"
|
||||
#include <openssl/modes.h>
|
||||
|
||||
static const unsigned char default_iv[] = {
|
||||
0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6,
|
||||
};
|
||||
/* Input size limit: lower than maximum of standards but far larger than
|
||||
* anything that will be used in practice.
|
||||
*/
|
||||
#define CRYPTO128_WRAP_MAX (1UL << 31)
|
||||
|
||||
size_t CRYPTO_128_wrap(void *key, const unsigned char *iv,
|
||||
unsigned char *out,
|
||||
const unsigned char *in, size_t inlen, block128_f block)
|
||||
{
|
||||
unsigned char *A, B[16], *R;
|
||||
size_t i, j, t;
|
||||
if ((inlen & 0x7) || (inlen < 8) || (inlen > CRYPTO128_WRAP_MAX))
|
||||
return 0;
|
||||
A = B;
|
||||
t = 1;
|
||||
memcpy(out + 8, in, inlen);
|
||||
if (!iv)
|
||||
iv = default_iv;
|
||||
|
||||
memcpy(A, iv, 8);
|
||||
|
||||
for (j = 0; j < 6; j++)
|
||||
{
|
||||
R = out + 8;
|
||||
for (i = 0; i < inlen; i += 8, t++, R += 8)
|
||||
{
|
||||
memcpy(B + 8, R, 8);
|
||||
block(B, B, key);
|
||||
A[7] ^= (unsigned char)(t & 0xff);
|
||||
if (t > 0xff)
|
||||
{
|
||||
A[6] ^= (unsigned char)((t >> 8) & 0xff);
|
||||
A[5] ^= (unsigned char)((t >> 16) & 0xff);
|
||||
A[4] ^= (unsigned char)((t >> 24) & 0xff);
|
||||
}
|
||||
memcpy(R, B + 8, 8);
|
||||
}
|
||||
}
|
||||
memcpy(out, A, 8);
|
||||
return inlen + 8;
|
||||
}
|
||||
|
||||
size_t CRYPTO_128_unwrap(void *key, const unsigned char *iv,
|
||||
unsigned char *out,
|
||||
const unsigned char *in, size_t inlen, block128_f block)
|
||||
{
|
||||
unsigned char *A, B[16], *R;
|
||||
size_t i, j, t;
|
||||
inlen -= 8;
|
||||
if ((inlen & 0x7) || (inlen < 8) || (inlen > CRYPTO128_WRAP_MAX))
|
||||
return 0;
|
||||
A = B;
|
||||
t = 6 * (inlen >> 3);
|
||||
memcpy(A, in, 8);
|
||||
memcpy(out, in + 8, inlen);
|
||||
for (j = 0; j < 6; j++)
|
||||
{
|
||||
R = out + inlen - 8;
|
||||
for (i = 0; i < inlen; i += 8, t--, R -= 8)
|
||||
{
|
||||
A[7] ^= (unsigned char)(t & 0xff);
|
||||
if (t > 0xff)
|
||||
{
|
||||
A[6] ^= (unsigned char)((t >> 8) & 0xff);
|
||||
A[5] ^= (unsigned char)((t >> 16) & 0xff);
|
||||
A[4] ^= (unsigned char)((t >> 24) & 0xff);
|
||||
}
|
||||
memcpy(B + 8, R, 8);
|
||||
block(B, B, key);
|
||||
memcpy(R, B + 8, 8);
|
||||
}
|
||||
}
|
||||
if (!iv)
|
||||
iv = default_iv;
|
||||
if (memcmp(A, iv, 8))
|
||||
{
|
||||
OPENSSL_cleanse(out, inlen);
|
||||
return 0;
|
||||
}
|
||||
return inlen;
|
||||
}
|
||||
Loading…
Reference in a new issue