The Tor Browser: security/nss/lib/freebl/nsslowhash.c@b8a032363ba2 (annotated)

security/nss/lib/freebl/nsslowhash.c@b8a032363ba2 (annotated)

security/nss/lib/freebl/nsslowhash.c

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #ifdef FREEBL_NO_DEPEND
 #include "stubs.h"
 #endif
 #include "prtypes.h"
 #include "secerr.h"
 #include "pkcs11t.h"
 #include "blapi.h"
 #include "hasht.h"
 #include "plhash.h"
 #include "nsslowhash.h"
 /* FIPS preprocessor directives for message digests             */
 #define FIPS_KNOWN_HASH_MESSAGE_LENGTH          64  /* 512-bits */
 /* Known Hash Message (512-bits).  Used for all hashes (incl. SHA-N [N>1]). */
 static const PRUint8 known_hash_message[] = {
   "The test message for the MD2, MD5, and SHA-1 hashing algorithms." };
 static CK_RV
 freebl_fips_MD2_PowerUpSelfTest( void )
 {
     /* MD2 Known Digest Message (128-bits). */
     static const PRUint8 md2_known_digest[]  = {
 x41,0x5a,0x12,0xb2,0x3f,0x28,0x97,0x17,
 x0c,0x71,0x4e,0xcc,0x40,0xc8,0x1d,0x1b};
     /* MD2 variables. */
     MD2Context * md2_context;
     unsigned int md2_bytes_hashed;
     PRUint8      md2_computed_digest[MD2_LENGTH];
     /***********************************************/
     /* MD2 Single-Round Known Answer Hashing Test. */
     /***********************************************/
     md2_context = MD2_NewContext();
     if( md2_context == NULL )
         return( CKR_HOST_MEMORY );
     MD2_Begin( md2_context );
     MD2_Update( md2_context, known_hash_message,
                 FIPS_KNOWN_HASH_MESSAGE_LENGTH );
     MD2_End( md2_context, md2_computed_digest, &md2_bytes_hashed, MD2_LENGTH );
     MD2_DestroyContext( md2_context , PR_TRUE );
     if( ( md2_bytes_hashed != MD2_LENGTH ) ||
         ( PORT_Memcmp( md2_computed_digest, md2_known_digest,
                        MD2_LENGTH ) != 0 ) )
         return( CKR_DEVICE_ERROR );
     return( CKR_OK );
 }
 static CK_RV
 freebl_fips_MD5_PowerUpSelfTest( void )
 {
     /* MD5 Known Digest Message (128-bits). */
     static const PRUint8 md5_known_digest[]  = {
 x25,0xc8,0xc0,0x10,0xc5,0x6e,0x68,0x28,
 x28,0xa4,0xa5,0xd2,0x98,0x9a,0xea,0x2d};
     /* MD5 variables. */
     PRUint8        md5_computed_digest[MD5_LENGTH];
     SECStatus      md5_status;
     /***********************************************/
     /* MD5 Single-Round Known Answer Hashing Test. */
     /***********************************************/
     md5_status = MD5_HashBuf( md5_computed_digest, known_hash_message,
                               FIPS_KNOWN_HASH_MESSAGE_LENGTH );
     if( ( md5_status != SECSuccess ) ||
         ( PORT_Memcmp( md5_computed_digest, md5_known_digest,
                        MD5_LENGTH ) != 0 ) )
         return( CKR_DEVICE_ERROR );
     return( CKR_OK );
 }
 static CK_RV
 freebl_fips_SHA_PowerUpSelfTest( void )
 {
     /* SHA-1 Known Digest Message (160-bits). */
     static const PRUint8 sha1_known_digest[] = {
 x0a,0x6d,0x07,0xba,0x1e,0xbd,0x8a,0x1b,
 x72,0xf6,0xc7,0x22,0xf1,0x27,0x9f,0xf0,
 xe0,0x68,0x47,0x7a};
     /* SHA-224 Known Digest Message (224-bits). */
     static const PRUint8 sha224_known_digest[] = {
 x89,0x5e,0x7f,0xfd,0x0e,0xd8,0x35,0x6f,
 x64,0x6d,0xf2,0xde,0x5e,0xed,0xa6,0x7f,
 x29,0xd1,0x12,0x73,0x42,0x84,0x95,0x4f,
 x8e,0x08,0xe5,0xcb};
     /* SHA-256 Known Digest Message (256-bits). */
     static const PRUint8 sha256_known_digest[] = {
 x38,0xa9,0xc1,0xf0,0x35,0xf6,0x5d,0x61,
 x11,0xd4,0x0b,0xdc,0xce,0x35,0x14,0x8d,
 xf2,0xdd,0xaf,0xaf,0xcf,0xb7,0x87,0xe9,
 x96,0xa5,0xd2,0x83,0x62,0x46,0x56,0x79};
     /* SHA-384 Known Digest Message (384-bits). */
     static const PRUint8 sha384_known_digest[] = {
 x11,0xfe,0x1c,0x00,0x89,0x48,0xde,0xb3,
 x99,0xee,0x1c,0x18,0xb4,0x10,0xfb,0xfe,
 xe3,0xa8,0x2c,0xf3,0x04,0xb0,0x2f,0xc8,
 xa3,0xc4,0x5e,0xea,0x7e,0x60,0x48,0x7b,
 xce,0x2c,0x62,0xf7,0xbc,0xa7,0xe8,0xa3,
 xcf,0x24,0xce,0x9c,0xe2,0x8b,0x09,0x72};
     /* SHA-512 Known Digest Message (512-bits). */
     static const PRUint8 sha512_known_digest[] = {
 xc8,0xb3,0x27,0xf9,0x0b,0x24,0xc8,0xbf,
 x4c,0xba,0x33,0x54,0xf2,0x31,0xbf,0xdb,
 xab,0xfd,0xb3,0x15,0xd7,0xfa,0x48,0x99,
 x07,0x60,0x0f,0x57,0x41,0x1a,0xdd,0x28,
 x12,0x55,0x25,0xac,0xba,0x3a,0x99,0x12,
 x2c,0x7a,0x8f,0x75,0x3a,0xe1,0x06,0x6f,
 x30,0x31,0xc9,0x33,0xc6,0x1b,0x90,0x1a,
 x6c,0x98,0x9a,0x87,0xd0,0xb2,0xf8,0x07};
     /* SHA-X variables. */
     PRUint8        sha_computed_digest[HASH_LENGTH_MAX];
     SECStatus      sha_status;
     /*************************************************/
     /* SHA-1 Single-Round Known Answer Hashing Test. */
     /*************************************************/
     sha_status = SHA1_HashBuf( sha_computed_digest, known_hash_message,
                                 FIPS_KNOWN_HASH_MESSAGE_LENGTH );
     if( ( sha_status != SECSuccess ) ||
         ( PORT_Memcmp( sha_computed_digest, sha1_known_digest,
                        SHA1_LENGTH ) != 0 ) )
         return( CKR_DEVICE_ERROR );
     /***************************************************/
     /* SHA-224 Single-Round Known Answer Hashing Test. */
     /***************************************************/
     sha_status = SHA224_HashBuf( sha_computed_digest, known_hash_message,
                                 FIPS_KNOWN_HASH_MESSAGE_LENGTH );
     if( ( sha_status != SECSuccess ) ||
         ( PORT_Memcmp( sha_computed_digest, sha224_known_digest,
                        SHA224_LENGTH ) != 0 ) )
         return( CKR_DEVICE_ERROR );
     /***************************************************/
     /* SHA-256 Single-Round Known Answer Hashing Test. */
     /***************************************************/
     sha_status = SHA256_HashBuf( sha_computed_digest, known_hash_message,
                                 FIPS_KNOWN_HASH_MESSAGE_LENGTH );
     if( ( sha_status != SECSuccess ) ||
         ( PORT_Memcmp( sha_computed_digest, sha256_known_digest,
                        SHA256_LENGTH ) != 0 ) )
         return( CKR_DEVICE_ERROR );
     /***************************************************/
     /* SHA-384 Single-Round Known Answer Hashing Test. */
     /***************************************************/
     sha_status = SHA384_HashBuf( sha_computed_digest, known_hash_message,
                                 FIPS_KNOWN_HASH_MESSAGE_LENGTH );
     if( ( sha_status != SECSuccess ) ||
         ( PORT_Memcmp( sha_computed_digest, sha384_known_digest,
                        SHA384_LENGTH ) != 0 ) )
         return( CKR_DEVICE_ERROR );
     /***************************************************/
     /* SHA-512 Single-Round Known Answer Hashing Test. */
     /***************************************************/
     sha_status = SHA512_HashBuf( sha_computed_digest, known_hash_message,
                                 FIPS_KNOWN_HASH_MESSAGE_LENGTH );
     if( ( sha_status != SECSuccess ) ||
         ( PORT_Memcmp( sha_computed_digest, sha512_known_digest,
                        SHA512_LENGTH ) != 0 ) )
         return( CKR_DEVICE_ERROR );
     return( CKR_OK );
 }
 static CK_RV
 freebl_fipsSoftwareIntegrityTest(void)
 {
     CK_RV crv = CKR_OK;
     /* make sure that our check file signatures are OK */
     if (!BLAPI_VerifySelf(SHLIB_PREFIX"freebl"SHLIB_VERSION"."SHLIB_SUFFIX)) {
 	crv = CKR_DEVICE_ERROR; /* better error code? checksum error? */
     }
     return crv;
 }
 CK_RV
 freebl_fipsPowerUpSelfTest( void )
 {
     CK_RV rv;
     /* MD2 Power-Up SelfTest(s). */
     rv = freebl_fips_MD2_PowerUpSelfTest();
     if( rv != CKR_OK )
         return rv;
     /* MD5 Power-Up SelfTest(s). */
     rv = freebl_fips_MD5_PowerUpSelfTest();
     if( rv != CKR_OK )
         return rv;
     /* SHA-X Power-Up SelfTest(s). */
     rv = freebl_fips_SHA_PowerUpSelfTest();
     if( rv != CKR_OK )
         return rv;
     /* Software/Firmware Integrity Test. */
     rv = freebl_fipsSoftwareIntegrityTest();
     if( rv != CKR_OK )
         return rv;
     /* Passed Power-Up SelfTest(s). */
     return( CKR_OK );
 }
 struct NSSLOWInitContextStr {
    int count;
 };
 struct NSSLOWHASHContextStr {
     const SECHashObject *hashObj;
     void *hashCtxt;
 };
 static int nsslow_GetFIPSEnabled(void) {
 #ifdef LINUX
     FILE *f;
     char d;
     size_t size;
     f = fopen("/proc/sys/crypto/fips_enabled", "r");
     if (!f)
         return 0;
     size = fread(&d, 1, 1, f);
     fclose(f);
     if (size != 1)
         return 0;
     if (d != '1')
         return 0;
 #endif
     return 1;
 }
 static int post = 0;
 static int post_failed = 0;
 static NSSLOWInitContext dummyContext = { 0 };
 NSSLOWInitContext *
 NSSLOW_Init(void)
 {
     SECStatus rv;
     CK_RV crv;
 #ifdef FREEBL_NO_DEPEND
     PRBool nsprAvailable = PR_FALSE;
     rv = FREEBL_InitStubs();
     nsprAvailable = (rv ==  SECSuccess ) ? PR_TRUE : PR_FALSE;
 #endif
     if (post_failed) {
 	return NULL;
     }
     if (!post && nsslow_GetFIPSEnabled()) {
 	crv = freebl_fipsPowerUpSelfTest();
 	if (crv != CKR_OK) {
 	    post_failed = 1;
 	    return NULL;
 	}
     }
     post = 1;
     return &dummyContext;
 }
 void
 NSSLOW_Shutdown(NSSLOWInitContext *context)
 {
    PORT_Assert(context == &dummyContext);
    return;
 }
 void
 NSSLOW_Reset(NSSLOWInitContext *context)
 {
    PORT_Assert(context == &dummyContext);
    post_failed = 0;
    post = 0;
    return;
 }
 NSSLOWHASHContext *
 NSSLOWHASH_NewContext(NSSLOWInitContext *initContext,
 			HASH_HashType hashType)
 {
    NSSLOWHASHContext *context;
    if (post_failed) {
 	PORT_SetError(SEC_ERROR_PKCS11_DEVICE_ERROR);
 	return NULL;
    }
    if (initContext != &dummyContext) {
 	PORT_SetError(SEC_ERROR_INVALID_ARGS);
 	return (NULL);
    }
    context = PORT_ZNew(NSSLOWHASHContext);
    if (!context) {
 	return NULL;
    }
    context->hashObj = HASH_GetRawHashObject(hashType);
    if (!context->hashObj) {
 	PORT_Free(context);
 	return NULL;
    }
    context->hashCtxt = context->hashObj->create();
    if (!context->hashCtxt) {
 	PORT_Free(context);
 	return NULL;
    }
    return context;
 }
 void
 NSSLOWHASH_Begin(NSSLOWHASHContext *context)
 {
    return context->hashObj->begin(context->hashCtxt);
 }
 void
 NSSLOWHASH_Update(NSSLOWHASHContext *context, const unsigned char *buf,
 						 unsigned int len)
 {
    return context->hashObj->update(context->hashCtxt, buf, len);
 }
 void
 NSSLOWHASH_End(NSSLOWHASHContext *context, unsigned char *buf,
 					 unsigned int *ret, unsigned int len)
 {
    return context->hashObj->end(context->hashCtxt, buf, ret, len);
 }
 void
 NSSLOWHASH_Destroy(NSSLOWHASHContext *context)
 {
    context->hashObj->destroy(context->hashCtxt, PR_TRUE);
    PORT_Free(context);
 }
 unsigned int
 NSSLOWHASH_Length(NSSLOWHASHContext *context)
 {
    return context->hashObj->length;
 }

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security/nss/lib/freebl/nsslowhash.c@b8a032363ba2 (annotated)

security/nss/lib/freebl/nsslowhash.c