| /* |
| * Platform specific crypto wrappers |
| * |
| * ***** BEGIN LICENSE BLOCK ***** |
| * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| * |
| * The contents of this file are subject to the Mozilla Public License Version |
| * 1.1 (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * http://www.mozilla.org/MPL/ |
| * |
| * Software distributed under the License is distributed on an "AS IS" basis, |
| * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
| * for the specific language governing rights and limitations under the |
| * License. |
| * |
| * The Original Code is the Netscape security libraries. |
| * |
| * The Initial Developer of the Original Code is |
| * Netscape Communications Corporation. |
| * Portions created by the Initial Developer are Copyright (C) 1994-2000 |
| * the Initial Developer. All Rights Reserved. |
| * |
| * Contributor(s): |
| * Ryan Sleevi <ryan.sleevi@gmail.com> |
| * |
| * Alternatively, the contents of this file may be used under the terms of |
| * either the GNU General Public License Version 2 or later (the "GPL"), or |
| * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| * in which case the provisions of the GPL or the LGPL are applicable instead |
| * of those above. If you wish to allow use of your version of this file only |
| * under the terms of either the GPL or the LGPL, and not to allow others to |
| * use your version of this file under the terms of the MPL, indicate your |
| * decision by deleting the provisions above and replace them with the notice |
| * and other provisions required by the GPL or the LGPL. If you do not delete |
| * the provisions above, a recipient may use your version of this file under |
| * the terms of any one of the MPL, the GPL or the LGPL. |
| * |
| * ***** END LICENSE BLOCK ***** */ |
| /* $Id$ */ |
| #include "certt.h" |
| #include "cryptohi.h" |
| #include "keythi.h" |
| #include "nss.h" |
| #include "secitem.h" |
| #include "ssl.h" |
| #include "sslimpl.h" |
| #include "prerror.h" |
| #include "prinit.h" |
| |
| #ifdef NSS_PLATFORM_CLIENT_AUTH |
| #ifdef XP_WIN32 |
| #include <NCrypt.h> |
| #endif |
| #endif |
| |
| #ifdef NSS_PLATFORM_CLIENT_AUTH |
| CERTCertificateList* |
| hack_NewCertificateListFromCertList(CERTCertList* list) |
| { |
| CERTCertificateList * chain = NULL; |
| PLArenaPool * arena = NULL; |
| CERTCertListNode * node; |
| int len; |
| |
| if (CERT_LIST_EMPTY(list)) |
| goto loser; |
| |
| arena = PORT_NewArena(4096); |
| if (arena == NULL) |
| goto loser; |
| |
| for (len = 0, node = CERT_LIST_HEAD(list); !CERT_LIST_END(node, list); |
| len++, node = CERT_LIST_NEXT(node)) { |
| } |
| |
| chain = PORT_ArenaNew(arena, CERTCertificateList); |
| if (chain == NULL) |
| goto loser; |
| |
| chain->certs = PORT_ArenaNewArray(arena, SECItem, len); |
| if (!chain->certs) |
| goto loser; |
| chain->len = len; |
| |
| for (len = 0, node = CERT_LIST_HEAD(list); !CERT_LIST_END(node, list); |
| len++, node = CERT_LIST_NEXT(node)) { |
| // Check to see if the last cert to be sent is a self-signed cert, |
| // and if so, omit it from the list of certificates. However, if |
| // there is only one cert (len == 0), include the cert, as it means |
| // the EE cert is self-signed. |
| if (len > 0 && (len == chain->len - 1) && node->cert->isRoot) { |
| chain->len = len; |
| break; |
| } |
| SECITEM_CopyItem(arena, &chain->certs[len], &node->cert->derCert); |
| } |
| |
| chain->arena = arena; |
| return chain; |
| |
| loser: |
| if (arena) { |
| PORT_FreeArena(arena, PR_FALSE); |
| } |
| return NULL; |
| } |
| |
| #if defined(XP_WIN32) |
| typedef SECURITY_STATUS (WINAPI *NCryptFreeObjectFunc)(NCRYPT_HANDLE); |
| typedef SECURITY_STATUS (WINAPI *NCryptSignHashFunc)( |
| NCRYPT_KEY_HANDLE /* hKey */, |
| VOID* /* pPaddingInfo */, |
| PBYTE /* pbHashValue */, |
| DWORD /* cbHashValue */, |
| PBYTE /* pbSignature */, |
| DWORD /* cbSignature */, |
| DWORD* /* pcbResult */, |
| DWORD /* dwFlags */); |
| |
| static PRCallOnceType cngFunctionsInitOnce; |
| static const PRCallOnceType pristineCallOnce; |
| |
| static PRLibrary *ncrypt_library = NULL; |
| static NCryptFreeObjectFunc pNCryptFreeObject = NULL; |
| static NCryptSignHashFunc pNCryptSignHash = NULL; |
| |
| static SECStatus |
| ssl_ShutdownCngFunctions(void *appData, void *nssData) |
| { |
| pNCryptSignHash = NULL; |
| pNCryptFreeObject = NULL; |
| if (ncrypt_library) { |
| PR_UnloadLibrary(ncrypt_library); |
| ncrypt_library = NULL; |
| } |
| |
| cngFunctionsInitOnce = pristineCallOnce; |
| |
| return SECSuccess; |
| } |
| |
| static PRStatus |
| ssl_InitCngFunctions(void) |
| { |
| SECStatus rv; |
| |
| ncrypt_library = PR_LoadLibrary("ncrypt.dll"); |
| if (ncrypt_library == NULL) |
| goto loser; |
| |
| pNCryptFreeObject = (NCryptFreeObjectFunc)PR_FindFunctionSymbol( |
| ncrypt_library, "NCryptFreeObject"); |
| if (pNCryptFreeObject == NULL) |
| goto loser; |
| |
| pNCryptSignHash = (NCryptSignHashFunc)PR_FindFunctionSymbol( |
| ncrypt_library, "NCryptSignHash"); |
| if (pNCryptSignHash == NULL) |
| goto loser; |
| |
| rv = NSS_RegisterShutdown(ssl_ShutdownCngFunctions, NULL); |
| if (rv != SECSuccess) |
| goto loser; |
| |
| return PR_SUCCESS; |
| |
| loser: |
| pNCryptSignHash = NULL; |
| pNCryptFreeObject = NULL; |
| if (ncrypt_library) { |
| PR_UnloadLibrary(ncrypt_library); |
| ncrypt_library = NULL; |
| } |
| |
| return PR_FAILURE; |
| } |
| |
| static SECStatus |
| ssl_InitCng(void) |
| { |
| if (PR_CallOnce(&cngFunctionsInitOnce, ssl_InitCngFunctions) != PR_SUCCESS) |
| return SECFailure; |
| return SECSuccess; |
| } |
| |
| void |
| ssl_FreePlatformKey(PlatformKey key) |
| { |
| if (!key) |
| return; |
| |
| if (key->dwKeySpec == CERT_NCRYPT_KEY_SPEC) { |
| if (ssl_InitCng() == SECSuccess) { |
| (*pNCryptFreeObject)(key->hNCryptKey); |
| } |
| } else { |
| CryptReleaseContext(key->hCryptProv, 0); |
| } |
| PORT_Free(key); |
| } |
| |
| static SECStatus |
| ssl3_CngPlatformSignHashes(SSL3Hashes *hash, PlatformKey key, SECItem *buf, |
| PRBool isTLS, KeyType keyType) |
| { |
| SECStatus rv = SECFailure; |
| SECURITY_STATUS ncrypt_status; |
| PRBool doDerEncode = PR_FALSE; |
| SECItem hashItem; |
| DWORD signatureLen = 0; |
| DWORD dwFlags = 0; |
| VOID *pPaddingInfo = NULL; |
| |
| /* Always encode using PKCS#1 block type. */ |
| BCRYPT_PKCS1_PADDING_INFO rsaPaddingInfo; |
| |
| if (key->dwKeySpec != CERT_NCRYPT_KEY_SPEC) { |
| PR_SetError(SEC_ERROR_LIBRARY_FAILURE, 0); |
| return SECFailure; |
| } |
| if (ssl_InitCng() != SECSuccess) { |
| PR_SetError(SEC_ERROR_LIBRARY_FAILURE, 0); |
| return SECFailure; |
| } |
| |
| switch (keyType) { |
| case rsaKey: |
| switch (hash->hashAlg) { |
| case SEC_OID_UNKNOWN: |
| /* No OID/encoded DigestInfo. */ |
| rsaPaddingInfo.pszAlgId = NULL; |
| break; |
| case SEC_OID_SHA1: |
| rsaPaddingInfo.pszAlgId = BCRYPT_SHA1_ALGORITHM; |
| break; |
| case SEC_OID_SHA256: |
| rsaPaddingInfo.pszAlgId = BCRYPT_SHA256_ALGORITHM; |
| break; |
| case SEC_OID_SHA384: |
| rsaPaddingInfo.pszAlgId = BCRYPT_SHA384_ALGORITHM; |
| break; |
| case SEC_OID_SHA512: |
| rsaPaddingInfo.pszAlgId = BCRYPT_SHA512_ALGORITHM; |
| break; |
| default: |
| PORT_SetError(SSL_ERROR_UNSUPPORTED_HASH_ALGORITHM); |
| return SECFailure; |
| } |
| hashItem.data = hash->u.raw; |
| hashItem.len = hash->len; |
| dwFlags = BCRYPT_PAD_PKCS1; |
| pPaddingInfo = &rsaPaddingInfo; |
| break; |
| case dsaKey: |
| case ecKey: |
| if (keyType == ecKey) { |
| doDerEncode = PR_TRUE; |
| } else { |
| doDerEncode = isTLS; |
| } |
| if (hash->hashAlg == SEC_OID_UNKNOWN) { |
| hashItem.data = hash->u.s.sha; |
| hashItem.len = sizeof(hash->u.s.sha); |
| } else { |
| hashItem.data = hash->u.raw; |
| hashItem.len = hash->len; |
| } |
| break; |
| default: |
| PORT_SetError(SEC_ERROR_INVALID_KEY); |
| goto done; |
| } |
| PRINT_BUF(60, (NULL, "hash(es) to be signed", hashItem.data, hashItem.len)); |
| |
| ncrypt_status = (*pNCryptSignHash)(key->hNCryptKey, pPaddingInfo, |
| (PBYTE)hashItem.data, hashItem.len, |
| NULL, 0, &signatureLen, dwFlags); |
| if (FAILED(ncrypt_status) || signatureLen == 0) { |
| PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, ncrypt_status); |
| goto done; |
| } |
| |
| buf->data = (unsigned char *)PORT_Alloc(signatureLen); |
| if (!buf->data) { |
| goto done; /* error code was set. */ |
| } |
| |
| ncrypt_status = (*pNCryptSignHash)(key->hNCryptKey, pPaddingInfo, |
| (PBYTE)hashItem.data, hashItem.len, |
| (PBYTE)buf->data, signatureLen, |
| &signatureLen, dwFlags); |
| if (FAILED(ncrypt_status) || signatureLen == 0) { |
| PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, ncrypt_status); |
| goto done; |
| } |
| |
| buf->len = signatureLen; |
| |
| if (doDerEncode) { |
| SECItem derSig = {siBuffer, NULL, 0}; |
| |
| /* This also works for an ECDSA signature */ |
| rv = DSAU_EncodeDerSigWithLen(&derSig, buf, buf->len); |
| if (rv == SECSuccess) { |
| PORT_Free(buf->data); /* discard unencoded signature. */ |
| *buf = derSig; /* give caller encoded signature. */ |
| } else if (derSig.data) { |
| PORT_Free(derSig.data); |
| } |
| } else { |
| rv = SECSuccess; |
| } |
| |
| PRINT_BUF(60, (NULL, "signed hashes", buf->data, buf->len)); |
| |
| done: |
| if (rv != SECSuccess && buf->data) { |
| PORT_Free(buf->data); |
| buf->data = NULL; |
| buf->len = 0; |
| } |
| |
| return rv; |
| } |
| |
| static SECStatus |
| ssl3_CAPIPlatformSignHashes(SSL3Hashes *hash, PlatformKey key, SECItem *buf, |
| PRBool isTLS, KeyType keyType) |
| { |
| SECStatus rv = SECFailure; |
| PRBool doDerEncode = PR_FALSE; |
| SECItem hashItem; |
| DWORD argLen = 0; |
| DWORD signatureLen = 0; |
| ALG_ID hashAlg = 0; |
| HCRYPTHASH hHash = 0; |
| DWORD hashLen = 0; |
| unsigned int i = 0; |
| |
| buf->data = NULL; |
| |
| switch (hash->hashAlg) { |
| case SEC_OID_UNKNOWN: |
| hashAlg = 0; |
| break; |
| case SEC_OID_SHA1: |
| hashAlg = CALG_SHA1; |
| break; |
| case SEC_OID_SHA256: |
| hashAlg = CALG_SHA_256; |
| break; |
| case SEC_OID_SHA384: |
| hashAlg = CALG_SHA_384; |
| break; |
| case SEC_OID_SHA512: |
| hashAlg = CALG_SHA_512; |
| break; |
| default: |
| PORT_SetError(SSL_ERROR_UNSUPPORTED_HASH_ALGORITHM); |
| return SECFailure; |
| } |
| |
| switch (keyType) { |
| case rsaKey: |
| if (hashAlg == 0) { |
| hashAlg = CALG_SSL3_SHAMD5; |
| } |
| hashItem.data = hash->u.raw; |
| hashItem.len = hash->len; |
| break; |
| case dsaKey: |
| case ecKey: |
| if (keyType == ecKey) { |
| doDerEncode = PR_TRUE; |
| } else { |
| doDerEncode = isTLS; |
| } |
| if (hashAlg == 0) { |
| hashAlg = CALG_SHA1; |
| hashItem.data = hash->u.s.sha; |
| hashItem.len = sizeof(hash->u.s.sha); |
| } else { |
| hashItem.data = hash->u.raw; |
| hashItem.len = hash->len; |
| } |
| break; |
| default: |
| PORT_SetError(SEC_ERROR_INVALID_KEY); |
| goto done; |
| } |
| PRINT_BUF(60, (NULL, "hash(es) to be signed", hashItem.data, hashItem.len)); |
| |
| if (!CryptCreateHash(key->hCryptProv, hashAlg, 0, 0, &hHash)) { |
| PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, GetLastError()); |
| goto done; |
| } |
| argLen = sizeof(hashLen); |
| if (!CryptGetHashParam(hHash, HP_HASHSIZE, (BYTE*)&hashLen, &argLen, 0)) { |
| PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, GetLastError()); |
| goto done; |
| } |
| if (hashLen != hashItem.len) { |
| PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, 0); |
| goto done; |
| } |
| if (!CryptSetHashParam(hHash, HP_HASHVAL, (BYTE*)hashItem.data, 0)) { |
| PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, GetLastError()); |
| goto done; |
| } |
| if (!CryptSignHash(hHash, key->dwKeySpec, NULL, 0, |
| NULL, &signatureLen) || signatureLen == 0) { |
| PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, GetLastError()); |
| goto done; |
| } |
| buf->data = (unsigned char *)PORT_Alloc(signatureLen); |
| if (!buf->data) |
| goto done; /* error code was set. */ |
| |
| if (!CryptSignHash(hHash, key->dwKeySpec, NULL, 0, |
| (BYTE*)buf->data, &signatureLen)) { |
| PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, GetLastError()); |
| goto done; |
| } |
| buf->len = signatureLen; |
| |
| /* CryptoAPI signs in little-endian, so reverse */ |
| for (i = 0; i < buf->len / 2; ++i) { |
| unsigned char tmp = buf->data[i]; |
| buf->data[i] = buf->data[buf->len - 1 - i]; |
| buf->data[buf->len - 1 - i] = tmp; |
| } |
| if (doDerEncode) { |
| SECItem derSig = {siBuffer, NULL, 0}; |
| |
| /* This also works for an ECDSA signature */ |
| rv = DSAU_EncodeDerSigWithLen(&derSig, buf, buf->len); |
| if (rv == SECSuccess) { |
| PORT_Free(buf->data); /* discard unencoded signature. */ |
| *buf = derSig; /* give caller encoded signature. */ |
| } else if (derSig.data) { |
| PORT_Free(derSig.data); |
| } |
| } else { |
| rv = SECSuccess; |
| } |
| |
| PRINT_BUF(60, (NULL, "signed hashes", buf->data, buf->len)); |
| done: |
| if (hHash) |
| CryptDestroyHash(hHash); |
| if (rv != SECSuccess && buf->data) { |
| PORT_Free(buf->data); |
| buf->data = NULL; |
| } |
| return rv; |
| } |
| |
| SECStatus |
| ssl3_PlatformSignHashes(SSL3Hashes *hash, PlatformKey key, SECItem *buf, |
| PRBool isTLS, KeyType keyType) |
| { |
| if (key->dwKeySpec == CERT_NCRYPT_KEY_SPEC) { |
| return ssl3_CngPlatformSignHashes(hash, key, buf, isTLS, keyType); |
| } |
| return ssl3_CAPIPlatformSignHashes(hash, key, buf, isTLS, keyType); |
| } |
| |
| #elif defined(XP_MACOSX) |
| #include <Security/cssm.h> |
| |
| void |
| ssl_FreePlatformKey(PlatformKey key) |
| { |
| CFRelease(key); |
| } |
| |
| #define SSL_MAX_DIGEST_INFO_PREFIX 20 |
| |
| /* ssl3_GetDigestInfoPrefix sets |out| and |out_len| to point to a buffer that |
| * contains ASN.1 data that should be prepended to a hash of the given type in |
| * order to create a DigestInfo structure that is valid for use in a PKCS #1 |
| * v1.5 RSA signature. |out_len| will not be set to a value greater than |
| * SSL_MAX_DIGEST_INFO_PREFIX. */ |
| static SECStatus |
| ssl3_GetDigestInfoPrefix(SECOidTag hashAlg, |
| const SSL3Opaque** out, unsigned int *out_len) |
| { |
| /* These are the DER encoding of ASN.1 DigestInfo structures: |
| * DigestInfo ::= SEQUENCE { |
| * digestAlgorithm AlgorithmIdentifier, |
| * digest OCTET STRING |
| * } |
| * See PKCS #1 v2.2 Section 9.2, Note 1. |
| */ |
| static const unsigned char kSHA1[] = { |
| 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, |
| 0x03, 0x02, 0x1a, 0x05, 0x00, 0x04, 0x14 |
| }; |
| static const unsigned char kSHA224[] = { |
| 0x30, 0x2d, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, |
| 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x04, 0x05, |
| 0x00, 0x04, 0x1c |
| }; |
| static const unsigned char kSHA256[] = { |
| 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, |
| 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, |
| 0x00, 0x04, 0x20 |
| }; |
| static const unsigned char kSHA384[] = { |
| 0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, |
| 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02, 0x05, |
| 0x00, 0x04, 0x30 |
| }; |
| static const unsigned char kSHA512[] = { |
| 0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, |
| 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03, 0x05, |
| 0x00, 0x04, 0x40 |
| }; |
| |
| switch (hashAlg) { |
| case SEC_OID_UNKNOWN: |
| *out_len = 0; |
| break; |
| case SEC_OID_SHA1: |
| *out = kSHA1; |
| *out_len = sizeof(kSHA1); |
| break; |
| case SEC_OID_SHA224: |
| *out = kSHA224; |
| *out_len = sizeof(kSHA224); |
| break; |
| case SEC_OID_SHA256: |
| *out = kSHA256; |
| *out_len = sizeof(kSHA256); |
| break; |
| case SEC_OID_SHA384: |
| *out = kSHA384; |
| *out_len = sizeof(kSHA384); |
| break; |
| case SEC_OID_SHA512: |
| *out = kSHA512; |
| *out_len = sizeof(kSHA512); |
| break; |
| default: |
| PORT_SetError(SSL_ERROR_UNSUPPORTED_HASH_ALGORITHM); |
| return SECFailure; |
| } |
| |
| return SECSuccess; |
| } |
| |
| /* Given the length of a raw DSA signature (consisting of two integers |
| * r and s), returns the maximum length of the DER encoding of the |
| * following structure: |
| * |
| * Dss-Sig-Value ::= SEQUENCE { |
| * r INTEGER, |
| * s INTEGER |
| * } |
| */ |
| static unsigned int |
| ssl3_DSAMaxDerEncodedLength(unsigned int rawDsaLen) |
| { |
| /* The length of one INTEGER. */ |
| unsigned int integerDerLen = rawDsaLen/2 + /* the integer itself */ |
| 1 + /* additional zero byte if high bit is 1 */ |
| SEC_ASN1LengthLength(rawDsaLen/2 + 1) + /* length */ |
| 1; /* INTEGER tag */ |
| |
| /* The length of two INTEGERs in a SEQUENCE */ |
| return 2 * integerDerLen + /* two INTEGERs */ |
| SEC_ASN1LengthLength(2 * integerDerLen) + /* length */ |
| 1; /* SEQUENCE tag */ |
| } |
| |
| SECStatus |
| ssl3_PlatformSignHashes(SSL3Hashes *hash, PlatformKey key, SECItem *buf, |
| PRBool isTLS, KeyType keyType) |
| { |
| SECStatus rv = SECFailure; |
| PRBool doDerDecode = PR_FALSE; |
| unsigned int rawDsaLen; |
| unsigned int signatureLen; |
| OSStatus status = noErr; |
| CSSM_CSP_HANDLE cspHandle = 0; |
| const CSSM_KEY *cssmKey = NULL; |
| CSSM_ALGORITHMS sigAlg; |
| CSSM_ALGORITHMS digestAlg; |
| const CSSM_ACCESS_CREDENTIALS * cssmCreds = NULL; |
| CSSM_RETURN cssmRv; |
| CSSM_DATA hashData; |
| CSSM_DATA signatureData; |
| CSSM_CC_HANDLE cssmSignature = 0; |
| const SSL3Opaque* prefix; |
| unsigned int prefixLen; |
| SSL3Opaque prefixAndHash[SSL_MAX_DIGEST_INFO_PREFIX + HASH_LENGTH_MAX]; |
| |
| buf->data = NULL; |
| |
| status = SecKeyGetCSPHandle(key, &cspHandle); |
| if (status != noErr) { |
| PORT_SetError(SEC_ERROR_INVALID_KEY); |
| goto done; |
| } |
| |
| status = SecKeyGetCSSMKey(key, &cssmKey); |
| if (status != noErr || !cssmKey) { |
| PORT_SetError(SEC_ERROR_NO_KEY); |
| goto done; |
| } |
| |
| sigAlg = cssmKey->KeyHeader.AlgorithmId; |
| digestAlg = CSSM_ALGID_NONE; |
| |
| switch (keyType) { |
| case rsaKey: |
| PORT_Assert(sigAlg == CSSM_ALGID_RSA); |
| signatureLen = (cssmKey->KeyHeader.LogicalKeySizeInBits + 7) / 8; |
| if (ssl3_GetDigestInfoPrefix(hash->hashAlg, &prefix, &prefixLen) != |
| SECSuccess) { |
| goto done; |
| } |
| if (prefixLen + hash->len > sizeof(prefixAndHash)) { |
| PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
| goto done; |
| } |
| memcpy(prefixAndHash, prefix, prefixLen); |
| memcpy(prefixAndHash + prefixLen, hash->u.raw, hash->len); |
| hashData.Data = prefixAndHash; |
| hashData.Length = prefixLen + hash->len; |
| break; |
| case dsaKey: |
| case ecKey: |
| /* SSL3 DSA signatures are raw, not DER-encoded. CSSM gives back |
| * DER-encoded signatures, so they must be decoded. */ |
| doDerDecode = (keyType == dsaKey) && !isTLS; |
| |
| /* Compute the maximum size of a DER-encoded signature: */ |
| if (keyType == ecKey) { |
| PORT_Assert(sigAlg == CSSM_ALGID_ECDSA); |
| /* LogicalKeySizeInBits is the size of an EC public key. But an |
| * ECDSA signature length depends on the size of the base |
| * point's order. For P-256, P-384, and P-521, these two sizes |
| * are the same. */ |
| rawDsaLen = |
| (cssmKey->KeyHeader.LogicalKeySizeInBits + 7) / 8 * 2; |
| } else { |
| /* TODO(davidben): Get the size of the subprime out of CSSM. For |
| * now, assume 160; Apple's implementation hardcodes it. */ |
| PORT_Assert(sigAlg == CSSM_ALGID_DSA); |
| rawDsaLen = 2 * (160 / 8); |
| } |
| signatureLen = ssl3_DSAMaxDerEncodedLength(rawDsaLen); |
| |
| /* SEC_OID_UNKNOWN is used to specify the MD5/SHA1 concatenated |
| * hash. In that case, we use just the SHA1 part. */ |
| if (hash->hashAlg == SEC_OID_UNKNOWN) { |
| hashData.Data = hash->u.s.sha; |
| hashData.Length = sizeof(hash->u.s.sha); |
| } else { |
| hashData.Data = hash->u.raw; |
| hashData.Length = hash->len; |
| } |
| break; |
| default: |
| PORT_SetError(SEC_ERROR_INVALID_KEY); |
| goto done; |
| } |
| PRINT_BUF(60, (NULL, "hash(es) to be signed", hashData.Data, hashData.Length)); |
| |
| if (signatureLen == 0) { |
| PORT_SetError(SEC_ERROR_INVALID_KEY); |
| goto done; |
| } |
| |
| buf->data = (unsigned char *)PORT_Alloc(signatureLen); |
| if (!buf->data) |
| goto done; /* error code was set. */ |
| |
| /* TODO(rsleevi): Should it be kSecCredentialTypeNoUI? In Win32, at least, |
| * you can prevent the UI by setting the provider handle on the |
| * certificate to be opened with CRYPT_SILENT, but is there an equivalent? |
| */ |
| status = SecKeyGetCredentials(key, CSSM_ACL_AUTHORIZATION_SIGN, |
| kSecCredentialTypeDefault, &cssmCreds); |
| if (status != noErr) { |
| PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, status); |
| goto done; |
| } |
| |
| signatureData.Length = signatureLen; |
| signatureData.Data = (uint8*)buf->data; |
| |
| cssmRv = CSSM_CSP_CreateSignatureContext(cspHandle, sigAlg, cssmCreds, |
| cssmKey, &cssmSignature); |
| if (cssmRv) { |
| PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, cssmRv); |
| goto done; |
| } |
| |
| /* See "Apple Cryptographic Service Provider Functional Specification" */ |
| if (cssmKey->KeyHeader.AlgorithmId == CSSM_ALGID_RSA) { |
| /* To set RSA blinding for RSA keys */ |
| CSSM_CONTEXT_ATTRIBUTE blindingAttr; |
| blindingAttr.AttributeType = CSSM_ATTRIBUTE_RSA_BLINDING; |
| blindingAttr.AttributeLength = sizeof(uint32); |
| blindingAttr.Attribute.Uint32 = 1; |
| cssmRv = CSSM_UpdateContextAttributes(cssmSignature, 1, &blindingAttr); |
| if (cssmRv) { |
| PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, cssmRv); |
| goto done; |
| } |
| } |
| |
| cssmRv = CSSM_SignData(cssmSignature, &hashData, 1, digestAlg, |
| &signatureData); |
| if (cssmRv) { |
| PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, cssmRv); |
| goto done; |
| } |
| buf->len = signatureData.Length; |
| |
| if (doDerDecode) { |
| SECItem* rawSig = DSAU_DecodeDerSigToLen(buf, rawDsaLen); |
| if (rawSig != NULL) { |
| PORT_Free(buf->data); /* discard encoded signature. */ |
| *buf = *rawSig; /* give caller unencoded signature. */ |
| PORT_Free(rawSig); |
| rv = SECSuccess; |
| } |
| } else { |
| rv = SECSuccess; |
| } |
| |
| PRINT_BUF(60, (NULL, "signed hashes", buf->data, buf->len)); |
| done: |
| /* cspHandle, cssmKey, and cssmCreds are owned by the SecKeyRef and |
| * should not be freed. When the PlatformKey is freed, they will be |
| * released. |
| */ |
| if (cssmSignature) |
| CSSM_DeleteContext(cssmSignature); |
| |
| if (rv != SECSuccess && buf->data) { |
| PORT_Free(buf->data); |
| buf->data = NULL; |
| } |
| return rv; |
| } |
| #else |
| void |
| ssl_FreePlatformKey(PlatformKey key) |
| { |
| } |
| |
| SECStatus |
| ssl3_PlatformSignHashes(SSL3Hashes *hash, PlatformKey key, SECItem *buf, |
| PRBool isTLS, KeyType keyType) |
| { |
| PORT_SetError(PR_NOT_IMPLEMENTED_ERROR); |
| return SECFailure; |
| } |
| #endif |
| |
| #endif /* NSS_PLATFORM_CLIENT_AUTH */ |
