e0e920b1a0
Ongoing work to skip NULL check before calling free routine. This gets:
ecp_nistz256_pre_comp_free nistp224_pre_comp_free nistp256_pre_comp_free
nistp521_pre_comp_free PKCS7_free PKCS7_RECIP_INFO_free
PKCS7_SIGNER_INFO_free sk_PKCS7_pop_free PKCS8_PRIV_KEY_INFO_free
PKCS12_free PKCS12_SAFEBAG_free PKCS12_free sk_PKCS12_SAFEBAG_pop_free
SSL_CONF_CTX_free SSL_CTX_free SSL_SESSION_free SSL_free ssl_cert_free
ssl_sess_cert_free
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
80 lines
1.6 KiB
C
80 lines
1.6 KiB
C
/* Simple S/MIME signing example */
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#include <openssl/pem.h>
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#include <openssl/pkcs7.h>
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#include <openssl/err.h>
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int main(int argc, char **argv)
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{
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BIO *in = NULL, *out = NULL, *tbio = NULL;
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X509 *scert = NULL;
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EVP_PKEY *skey = NULL;
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PKCS7 *p7 = NULL;
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int ret = 1;
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/*
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* For simple S/MIME signing use PKCS7_DETACHED. On OpenSSL 0.9.9 only:
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* for streaming detached set PKCS7_DETACHED|PKCS7_STREAM for streaming
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* non-detached set PKCS7_STREAM
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*/
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int flags = PKCS7_DETACHED | PKCS7_STREAM;
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OpenSSL_add_all_algorithms();
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ERR_load_crypto_strings();
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/* Read in signer certificate and private key */
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tbio = BIO_new_file("signer.pem", "r");
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if (!tbio)
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goto err;
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scert = PEM_read_bio_X509(tbio, NULL, 0, NULL);
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BIO_reset(tbio);
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skey = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL);
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if (!scert || !skey)
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goto err;
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/* Open content being signed */
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in = BIO_new_file("sign.txt", "r");
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if (!in)
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goto err;
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/* Sign content */
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p7 = PKCS7_sign(scert, skey, NULL, in, flags);
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if (!p7)
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goto err;
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out = BIO_new_file("smout.txt", "w");
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if (!out)
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goto err;
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if (!(flags & PKCS7_STREAM))
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BIO_reset(in);
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/* Write out S/MIME message */
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if (!SMIME_write_PKCS7(out, p7, in, flags))
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goto err;
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ret = 0;
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err:
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if (ret) {
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fprintf(stderr, "Error Signing Data\n");
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ERR_print_errors_fp(stderr);
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}
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PKCS7_free(p7);
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if (scert)
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X509_free(scert);
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EVP_PKEY_free(skey);
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BIO_free(in);
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BIO_free(out);
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BIO_free(tbio);
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return ret;
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}
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