1/* $OpenBSD: ssh-dss.c,v 1.26 2010/04/16 01:47:26 djm Exp $ */
2/*
3 * Copyright (c) 2000 Markus Friedl. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.

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48{
49 DSA_SIG *sig;
50 const EVP_MD *evp_md = EVP_sha1();
51 EVP_MD_CTX md;
52 u_char digest[EVP_MAX_MD_SIZE], sigblob[SIGBLOB_LEN];
53 u_int rlen, slen, len, dlen;
54 Buffer b;
55
56 if (key == NULL || key->dsa == NULL || (key->type != KEY_DSA &&
57 key->type != KEY_DSA_CERT && key->type != KEY_DSA_CERT_V00)) {
58 error("ssh_dss_sign: no DSA key");
59 return -1;
60 }
61 EVP_DigestInit(&md, evp_md);
62 EVP_DigestUpdate(&md, data, datalen);
63 EVP_DigestFinal(&md, digest, &dlen);
64
65 sig = DSA_do_sign(digest, dlen, key->dsa);

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112 DSA_SIG *sig;
113 const EVP_MD *evp_md = EVP_sha1();
114 EVP_MD_CTX md;
115 u_char digest[EVP_MAX_MD_SIZE], *sigblob;
116 u_int len, dlen;
117 int rlen, ret;
118 Buffer b;
119
120 if (key == NULL || key->dsa == NULL || (key->type != KEY_DSA &&
121 key->type != KEY_DSA_CERT && key->type != KEY_DSA_CERT_V00)) {
122 error("ssh_dss_verify: no DSA key");
123 return -1;
124 }
125
126 /* fetch signature */
127 if (datafellows & SSH_BUG_SIGBLOB) {
128 sigblob = xmalloc(signaturelen);
129 memcpy(sigblob, signature, signaturelen);

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