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Do HMAC.

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This commit is contained in:
Ben Laurie 2004-04-04 18:59:33 +00:00
parent 08198b1b5c
commit b452e706e3
1 changed files with 26 additions and 9 deletions
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35
apps/dgst.c
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@ -66,6 +66,7 @@
#include <openssl/objects.h> #include <openssl/objects.h>
#include <openssl/x509.h> #include <openssl/x509.h>
#include <openssl/pem.h> #include <openssl/pem.h>
#include <openssl/hmac.h>
#undef BUFSIZE #undef BUFSIZE
#define BUFSIZE 1024*8 #define BUFSIZE 1024*8
@ -73,9 +74,11 @@
#undef PROG #undef PROG
#define PROG dgst_main #define PROG dgst_main
static HMAC_CTX hmac_ctx;
int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout, int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
EVP_PKEY *key, unsigned char *sigin, int siglen, const char *title, EVP_PKEY *key, unsigned char *sigin, int siglen, const char *title,
const char *file); const char *file,const char *hmac_key);
int MAIN(int, char **); int MAIN(int, char **);
@ -103,6 +106,7 @@ int MAIN(int argc, char **argv)
#ifndef OPENSSL_NO_ENGINE #ifndef OPENSSL_NO_ENGINE
char *engine=NULL; char *engine=NULL;
#endif #endif
char *hmac_key=NULL;
apps_startup(); apps_startup();
@ -181,6 +185,12 @@ int MAIN(int argc, char **argv)
out_bin = 1; out_bin = 1;
else if (strcmp(*argv,"-d") == 0) else if (strcmp(*argv,"-d") == 0)
debug=1; debug=1;
else if (!strcmp(*argv,"-hmac"))
{
if (--argc < 1)
break;
hmac_key=*++argv;
}
else if ((m=EVP_get_digestbyname(&((*argv)[1]))) != NULL) else if ((m=EVP_get_digestbyname(&((*argv)[1]))) != NULL)
md=m; md=m;
else else
@ -235,7 +245,7 @@ int MAIN(int argc, char **argv)
} }
#ifndef OPENSSL_NO_ENGINE #ifndef OPENSSL_NO_ENGINE
e = setup_engine(bio_err, engine, 0); e = setup_engine(bio_err, engine, 0);
#endif #endif
in=BIO_new(BIO_s_file()); in=BIO_new(BIO_s_file());
@ -318,18 +328,18 @@ int MAIN(int argc, char **argv)
goto end; goto end;
} }
} }
/* we use md as a filter, reading from 'in' */ /* we use md as a filter, reading from 'in' */
BIO_set_md(bmd,md); BIO_set_md(bmd,md);
if (hmac_key)
HMAC_Init(&hmac_ctx,hmac_key,strlen(hmac_key),md);
inp=BIO_push(bmd,in); inp=BIO_push(bmd,in);
if (argc == 0) if (argc == 0)
{ {
BIO_set_fp(in,stdin,BIO_NOCLOSE); BIO_set_fp(in,stdin,BIO_NOCLOSE);
err=do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf, err=do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf,
siglen,"","(stdin)"); siglen,"","(stdin)",hmac_key);
} }
else else
{ {
@ -347,14 +357,15 @@ int MAIN(int argc, char **argv)
} }
if(!out_bin) if(!out_bin)
{ {
size_t len = strlen(name)+strlen(argv[i])+5; size_t len = strlen(name)+strlen(argv[i])+(hmac_key ? 4 : 0)+5;
tmp=tofree=OPENSSL_malloc(len); tmp=tofree=OPENSSL_malloc(len);
BIO_snprintf(tmp,len,"%s(%s)= ",name,argv[i]); BIO_snprintf(tmp,len,"%s%s(%s)= ",
hmac_key ? "HMAC_" : "",name,argv[i]);
} }
else else
tmp=""; tmp="";
r=do_fp(out,buf,inp,separator,out_bin,sigkey,sigbuf, r=do_fp(out,buf,inp,separator,out_bin,sigkey,sigbuf,
siglen,tmp,argv[i]); siglen,tmp,argv[i],hmac_key);
if(r) if(r)
err=r; err=r;
if(tofree) if(tofree)
@ -379,7 +390,7 @@ end:
int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout, int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
EVP_PKEY *key, unsigned char *sigin, int siglen, const char *title, EVP_PKEY *key, unsigned char *sigin, int siglen, const char *title,
const char *file) const char *file,const char *hmac_key)
{ {
int len; int len;
int i; int i;
@ -426,6 +437,12 @@ int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
return 1; return 1;
} }
} }
else if(hmac_key)
{
EVP_MD_CTX *ctx;
BIO_get_md_ctx(bp, &ctx);
HMAC_Final(&hmac_ctx,buf,&len);
}
else else
len=BIO_gets(bp,(char *)buf,BUFSIZE); len=BIO_gets(bp,(char *)buf,BUFSIZE);