diff options
Diffstat (limited to 'ssh-dss.c')
| -rw-r--r-- | ssh-dss.c | 20 |
1 files changed, 10 insertions, 10 deletions
@@ -23,7 +23,7 @@ */ #include "includes.h" -RCSID("$OpenBSD: ssh-dss.c,v 1.18 2003/02/12 09:33:04 markus Exp $"); +RCSID("$OpenBSD: ssh-dss.c,v 1.19 2003/11/10 16:23:41 jakob Exp $"); #include <openssl/bn.h> #include <openssl/evp.h> @@ -39,8 +39,8 @@ RCSID("$OpenBSD: ssh-dss.c,v 1.18 2003/02/12 09:33:04 markus Exp $"); #define SIGBLOB_LEN (2*INTBLOB_LEN) int -ssh_dss_sign(Key *key, u_char **sigp, u_int *lenp, - u_char *data, u_int datalen) +ssh_dss_sign(const Key *key, u_char **sigp, u_int *lenp, + const u_char *data, u_int datalen) { DSA_SIG *sig; const EVP_MD *evp_md = EVP_sha1(); @@ -101,8 +101,8 @@ ssh_dss_sign(Key *key, u_char **sigp, u_int *lenp, return 0; } int -ssh_dss_verify(Key *key, u_char *signature, u_int signaturelen, - u_char *data, u_int datalen) +ssh_dss_verify(const Key *key, const u_char *signature, u_int signaturelen, + const u_char *data, u_int datalen) { DSA_SIG *sig; const EVP_MD *evp_md = EVP_sha1(); @@ -119,7 +119,8 @@ ssh_dss_verify(Key *key, u_char *signature, u_int signaturelen, /* fetch signature */ if (datafellows & SSH_BUG_SIGBLOB) { - sigblob = signature; + sigblob = xmalloc(signaturelen); + memcpy(sigblob, signature, signaturelen); len = signaturelen; } else { /* ietf-drafts */ @@ -159,10 +160,9 @@ ssh_dss_verify(Key *key, u_char *signature, u_int signaturelen, BN_bin2bn(sigblob, INTBLOB_LEN, sig->r); BN_bin2bn(sigblob+ INTBLOB_LEN, INTBLOB_LEN, sig->s); - if (!(datafellows & SSH_BUG_SIGBLOB)) { - memset(sigblob, 0, len); - xfree(sigblob); - } + /* clean up */ + memset(sigblob, 0, len); + xfree(sigblob); /* sha1 the data */ EVP_DigestInit(&md, evp_md); |