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Switch to EVP_MD digest

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This commit is contained in:
Love Hornquist Astrand
2009-08-16 11:58:03 +02:00
parent b39e108bd8
commit 4378f084ef
1 changed files with 97 additions and 69 deletions
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166
kdc/digest.c
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@@ -613,7 +613,7 @@ _kdc_do_digest(krb5_context context,
}
if (strcasecmp(ireq.u.digestRequest.type, "CHAP") == 0) {
MD5_CTX ctx;
EVP_MD_CTX ctx;
unsigned char md[MD5_DIGEST_LENGTH];
char *mdx;
char id;
@@ -642,11 +642,15 @@ _kdc_do_digest(krb5_context context,
if (ret)
goto out;
MD5_Init(&ctx);
MD5_Update(&ctx, &id, 1);
MD5_Update(&ctx, password, strlen(password));
MD5_Update(&ctx, serverNonce.data, serverNonce.length);
MD5_Final(md, &ctx);
EVP_MD_CTX_init(&ctx);
EVP_DigestInit_ex(&ctx, EVP_md5(), NULL);
EVP_DigestUpdate(&ctx, &id, 1);
EVP_DigestUpdate(&ctx, password, strlen(password));
EVP_DigestUpdate(&ctx, serverNonce.data, serverNonce.length);
EVP_DigestFinal_ex(&ctx, md, NULL);
EVP_MD_CTX_cleanup(&ctx);
hex_encode(md, sizeof(md), &mdx);
if (mdx == NULL) {
@@ -669,7 +673,7 @@ _kdc_do_digest(krb5_context context,
}
} else if (strcasecmp(ireq.u.digestRequest.type, "SASL-DIGEST-MD5") == 0) {
MD5_CTX ctx;
EVP_MD_CTX ctx;
unsigned char md[MD5_DIGEST_LENGTH];
char *mdx;
char *A1, *A2;
@@ -694,49 +698,54 @@ _kdc_do_digest(krb5_context context,
if (ret)
goto failed;
MD5_Init(&ctx);
MD5_Update(&ctx, ireq.u.digestRequest.username,
EVP_MD_CTX_init(&ctx);
EVP_DigestInit_ex(&ctx, EVP_md5(), NULL);
EVP_DigestUpdate(&ctx, ireq.u.digestRequest.username,
strlen(ireq.u.digestRequest.username));
MD5_Update(&ctx, ":", 1);
MD5_Update(&ctx, *ireq.u.digestRequest.realm,
EVP_DigestUpdate(&ctx, ":", 1);
EVP_DigestUpdate(&ctx, *ireq.u.digestRequest.realm,
strlen(*ireq.u.digestRequest.realm));
MD5_Update(&ctx, ":", 1);
MD5_Update(&ctx, password, strlen(password));
MD5_Final(md, &ctx);
EVP_DigestUpdate(&ctx, ":", 1);
EVP_DigestUpdate(&ctx, password, strlen(password));
EVP_DigestFinal_ex(&ctx, md, NULL);
MD5_Init(&ctx);
MD5_Update(&ctx, md, sizeof(md));
MD5_Update(&ctx, ":", 1);
MD5_Update(&ctx, ireq.u.digestRequest.serverNonce,
EVP_DigestInit_ex(&ctx, EVP_md5(), NULL);
EVP_DigestUpdate(&ctx, md, sizeof(md));
EVP_DigestUpdate(&ctx, ":", 1);
EVP_DigestUpdate(&ctx, ireq.u.digestRequest.serverNonce,
strlen(ireq.u.digestRequest.serverNonce));
MD5_Update(&ctx, ":", 1);
MD5_Update(&ctx, *ireq.u.digestRequest.nonceCount,
EVP_DigestUpdate(&ctx, ":", 1);
EVP_DigestUpdate(&ctx, *ireq.u.digestRequest.nonceCount,
strlen(*ireq.u.digestRequest.nonceCount));
if (ireq.u.digestRequest.authid) {
MD5_Update(&ctx, ":", 1);
MD5_Update(&ctx, *ireq.u.digestRequest.authid,
EVP_DigestUpdate(&ctx, ":", 1);
EVP_DigestUpdate(&ctx, *ireq.u.digestRequest.authid,
strlen(*ireq.u.digestRequest.authid));
}
MD5_Final(md, &ctx);
EVP_DigestFinal_ex(&ctx, md, NULL);
hex_encode(md, sizeof(md), &A1);
if (A1 == NULL) {
ret = ENOMEM;
krb5_set_error_message(context, ret, "malloc: out of memory");
EVP_MD_CTX_cleanup(&ctx);
goto failed;
}
MD5_Init(&ctx);
MD5_Update(&ctx, "AUTHENTICATE:", sizeof("AUTHENTICATE:") - 1);
MD5_Update(&ctx, *ireq.u.digestRequest.uri,
EVP_DigestInit_ex(&ctx, EVP_md5(), NULL);
EVP_DigestUpdate(&ctx,
"AUTHENTICATE:", sizeof("AUTHENTICATE:") - 1);
EVP_DigestUpdate(&ctx, *ireq.u.digestRequest.uri,
strlen(*ireq.u.digestRequest.uri));
/* conf|int */
if (strcmp(ireq.u.digestRequest.digest, "clear") != 0) {
static char conf_zeros[] = ":00000000000000000000000000000000";
MD5_Update(&ctx, conf_zeros, sizeof(conf_zeros) - 1);
EVP_DigestUpdate(&ctx, conf_zeros, sizeof(conf_zeros) - 1);
}
MD5_Final(md, &ctx);
EVP_DigestFinal_ex(&ctx, md, NULL);
hex_encode(md, sizeof(md), &A2);
if (A2 == NULL) {
ret = ENOMEM;
@@ -745,24 +754,26 @@ _kdc_do_digest(krb5_context context,
goto failed;
}
MD5_Init(&ctx);
MD5_Update(&ctx, A1, strlen(A2));
MD5_Update(&ctx, ":", 1);
MD5_Update(&ctx, ireq.u.digestRequest.serverNonce,
EVP_DigestInit_ex(&ctx, EVP_md5(), NULL);
EVP_DigestUpdate(&ctx, A1, strlen(A2));
EVP_DigestUpdate(&ctx, ":", 1);
EVP_DigestUpdate(&ctx, ireq.u.digestRequest.serverNonce,
strlen(ireq.u.digestRequest.serverNonce));
MD5_Update(&ctx, ":", 1);
MD5_Update(&ctx, *ireq.u.digestRequest.nonceCount,
EVP_DigestUpdate(&ctx, ":", 1);
EVP_DigestUpdate(&ctx, *ireq.u.digestRequest.nonceCount,
strlen(*ireq.u.digestRequest.nonceCount));
MD5_Update(&ctx, ":", 1);
MD5_Update(&ctx, *ireq.u.digestRequest.clientNonce,
EVP_DigestUpdate(&ctx, ":", 1);
EVP_DigestUpdate(&ctx, *ireq.u.digestRequest.clientNonce,
strlen(*ireq.u.digestRequest.clientNonce));
MD5_Update(&ctx, ":", 1);
MD5_Update(&ctx, *ireq.u.digestRequest.qop,
EVP_DigestUpdate(&ctx, ":", 1);
EVP_DigestUpdate(&ctx, *ireq.u.digestRequest.qop,
strlen(*ireq.u.digestRequest.qop));
MD5_Update(&ctx, ":", 1);
MD5_Update(&ctx, A2, strlen(A2));
EVP_DigestUpdate(&ctx, ":", 1);
EVP_DigestUpdate(&ctx, A2, strlen(A2));
MD5_Final(md, &ctx);
EVP_DigestFinal_ex(&ctx, md, NULL);
EVP_MD_CTX_cleanup(&ctx);
free(A1);
free(A2);
@@ -793,7 +804,7 @@ _kdc_do_digest(krb5_context context,
const char *username;
struct ntlm_buf answer;
Key *key = NULL;
SHA_CTX ctx;
EVP_MD_CTX ctx;
if ((config->digests_allowed & MS_CHAP_V2) == 0) {
kdc_log(context, config, 0, "MS-CHAP-V2 not allowed");
@@ -820,8 +831,10 @@ _kdc_do_digest(krb5_context context,
else
username++;
EVP_MD_CTX_init(&ctx);
/* ChallangeHash */
SHA1_Init(&ctx);
EVP_DigestInit_ex(&ctx, EVP_sha1(), NULL);
{
ssize_t ssize;
krb5_data clientNonce;
@@ -830,7 +843,9 @@ _kdc_do_digest(krb5_context context,
clientNonce.data = malloc(clientNonce.length);
if (clientNonce.data == NULL) {
ret = ENOMEM;
krb5_set_error_message(context, ret, "malloc: out of memory");
krb5_set_error_message(context, ret,
"malloc: out of memory");
EVP_MD_CTX_cleanup(&ctx);
goto out;
}
@@ -840,14 +855,18 @@ _kdc_do_digest(krb5_context context,
ret = ENOMEM;
krb5_set_error_message(context, ret,
"Failed to decode clientNonce");
EVP_MD_CTX_cleanup(&ctx);
goto out;
}
SHA1_Update(&ctx, clientNonce.data, ssize);
EVP_DigestUpdate(&ctx, clientNonce.data, ssize);
free(clientNonce.data);
}
SHA1_Update(&ctx, serverNonce.data, serverNonce.length);
SHA1_Update(&ctx, username, strlen(username));
SHA1_Final(challange, &ctx);
EVP_DigestUpdate(&ctx, serverNonce.data, serverNonce.length);
EVP_DigestUpdate(&ctx, username, strlen(username));
EVP_DigestFinal_ex(&ctx, challange, NULL);
EVP_MD_CTX_cleanup(&ctx);
/* NtPasswordHash */
ret = krb5_parse_name(context, username, &clientprincipal);
@@ -904,34 +923,39 @@ _kdc_do_digest(krb5_context context,
if (r.u.response.success) {
unsigned char hashhash[MD4_DIGEST_LENGTH];
EVP_MD_CTX ctx;
EVP_MD_CTX_init(&ctx);
/* hashhash */
{
MD4_CTX hctx;
MD4_Init(&hctx);
MD4_Update(&hctx, key->key.keyvalue.data,
key->key.keyvalue.length);
MD4_Final(hashhash, &hctx);
EVP_DigestInit_ex(&ctx, EVP_md4(), NULL);
EVP_DigestUpdate(&ctx,
key->key.keyvalue.data,
key->key.keyvalue.length);
EVP_DigestFinal_ex(&ctx, hashhash, NULL);
}
/* GenerateAuthenticatorResponse */
SHA1_Init(&ctx);
SHA1_Update(&ctx, hashhash, sizeof(hashhash));
SHA1_Update(&ctx, answer.data, answer.length);
SHA1_Update(&ctx, ms_chap_v2_magic1,sizeof(ms_chap_v2_magic1));
SHA1_Final(md, &ctx);
EVP_DigestInit_ex(&ctx, EVP_sha1(), NULL);
EVP_DigestUpdate(&ctx, hashhash, sizeof(hashhash));
EVP_DigestUpdate(&ctx, answer.data, answer.length);
EVP_DigestUpdate(&ctx, ms_chap_v2_magic1,
sizeof(ms_chap_v2_magic1));
EVP_DigestFinal_ex(&ctx, md, NULL);
SHA1_Init(&ctx);
SHA1_Update(&ctx, md, sizeof(md));
SHA1_Update(&ctx, challange, 8);
SHA1_Update(&ctx, ms_chap_v2_magic2, sizeof(ms_chap_v2_magic2));
SHA1_Final(md, &ctx);
EVP_DigestInit_ex(&ctx, EVP_sha1(), NULL);
EVP_DigestUpdate(&ctx, md, sizeof(md));
EVP_DigestUpdate(&ctx, challange, 8);
EVP_DigestUpdate(&ctx, ms_chap_v2_magic2,
sizeof(ms_chap_v2_magic2));
EVP_DigestFinal_ex(&ctx, md, NULL);
r.u.response.rsp = calloc(1, sizeof(*r.u.response.rsp));
if (r.u.response.rsp == NULL) {
free(answer.data);
krb5_clear_error_message(context);
EVP_MD_CTX_cleanup(&ctx);
ret = ENOMEM;
goto out;
}
@@ -940,19 +964,23 @@ _kdc_do_digest(krb5_context context,
if (r.u.response.rsp == NULL) {
free(answer.data);
krb5_clear_error_message(context);
EVP_MD_CTX_cleanup(&ctx);
ret = ENOMEM;
goto out;
}
/* get_master, rfc 3079 3.4 */
SHA1_Init(&ctx);
SHA1_Update(&ctx, hashhash, 16); /* md4(hash) */
SHA1_Update(&ctx, answer.data, answer.length);
SHA1_Update(&ctx, ms_rfc3079_magic1, sizeof(ms_rfc3079_magic1));
SHA1_Final(md, &ctx);
EVP_DigestInit_ex(&ctx, EVP_sha1(), NULL);
EVP_DigestUpdate(&ctx, hashhash, 16);
EVP_DigestUpdate(&ctx, answer.data, answer.length);
EVP_DigestUpdate(&ctx, ms_rfc3079_magic1,
sizeof(ms_rfc3079_magic1));
EVP_DigestFinal_ex(&ctx, md, NULL);
free(answer.data);
EVP_MD_CTX_cleanup(&ctx);
r.u.response.session_key =
calloc(1, sizeof(*r.u.response.session_key));
if (r.u.response.session_key == NULL) {