mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 15:03:34 +00:00
398f0c16fb
This change makes SSL virtual hosting possible. You can now load
multiple certificates for multiple domains and redbean will just
figure out which one to use, even if you only have 1 ip address.
You can also use a jumbo certificate that lists all your domains
in the the subject alternative names.
This change also makes performance improvements to MbedTLS. Here
are some benchmarks vs. cc1920749e
BEFORE AFTER (microsecs)
suite_ssl.com 2512881 191738 13.11x faster
suite_pkparse.com 36291 3295 11.01x faster
suite_x509parse.com 854669 120293 7.10x faster
suite_pkwrite.com 6549 1265 5.18x faster
suite_ecdsa.com 53347 18778 2.84x faster
suite_pk.com 49051 18717 2.62x faster
suite_ecdh.com 19535 9502 2.06x faster
suite_shax.com 15848 7965 1.99x faster
suite_rsa.com 353257 184828 1.91x faster
suite_x509write.com 162646 85733 1.90x faster
suite_ecp.com 20503 11050 1.86x faster
suite_hmac_drbg.no_reseed.com 19528 11417 1.71x faster
suite_hmac_drbg.nopr.com 12460 8010 1.56x faster
suite_mpi.com 687124 442661 1.55x faster
suite_hmac_drbg.pr.com 11890 7752 1.53x faster
There aren't any special tricks to the performance imporvements.
It's mostly due to code cleanup, assembly and intel instructions
like mulx, adox, and adcx.
408 lines
15 KiB
C
408 lines
15 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:4;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright The Mbed TLS Contributors │
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│ │
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│ Licensed under the Apache License, Version 2.0 (the "License"); │
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│ you may not use this file except in compliance with the License. │
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│ You may obtain a copy of the License at │
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│ │
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│ http://www.apache.org/licenses/LICENSE-2.0 │
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│ │
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│ Unless required by applicable law or agreed to in writing, software │
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│ distributed under the License is distributed on an "AS IS" BASIS, │
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│ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. │
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│ See the License for the specific language governing permissions and │
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│ limitations under the License. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/mem/mem.h"
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#include "third_party/mbedtls/aes.h"
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#include "third_party/mbedtls/base64.h"
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#include "third_party/mbedtls/chk.h"
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#include "third_party/mbedtls/cipher.h"
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#include "third_party/mbedtls/common.h"
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#include "third_party/mbedtls/des.h"
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#include "third_party/mbedtls/error.h"
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#include "third_party/mbedtls/md5.h"
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#include "third_party/mbedtls/pem.h"
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#include "third_party/mbedtls/platform.h"
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/* clang-format off */
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asm(".ident\t\"\\n\\n\
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Mbed TLS (Apache 2.0)\\n\
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Copyright ARM Limited\\n\
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Copyright Mbed TLS Contributors\"");
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asm(".include \"libc/disclaimer.inc\"");
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/**
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* @fileoverview Privacy Enhanced Mail (PEM) decoding
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*/
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#if defined(MBEDTLS_PEM_PARSE_C) || defined(MBEDTLS_PEM_WRITE_C)
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#if defined(MBEDTLS_PEM_PARSE_C)
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void mbedtls_pem_init( mbedtls_pem_context *ctx )
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{
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mbedtls_platform_zeroize( ctx, sizeof( mbedtls_pem_context ) );
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}
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#if defined(MBEDTLS_MD5_C) && defined(MBEDTLS_CIPHER_MODE_CBC) && \
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( defined(MBEDTLS_DES_C) || defined(MBEDTLS_AES_C) )
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/*
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* Read a 16-byte hex string and convert it to binary
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*/
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static int pem_get_iv( const unsigned char *s, unsigned char *iv,
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size_t iv_len )
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{
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size_t i, j, k;
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mbedtls_platform_zeroize( iv, iv_len );
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for( i = 0; i < iv_len * 2; i++, s++ )
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{
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if( *s >= '0' && *s <= '9' ) j = *s - '0'; else
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if( *s >= 'A' && *s <= 'F' ) j = *s - '7'; else
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if( *s >= 'a' && *s <= 'f' ) j = *s - 'W'; else
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return( MBEDTLS_ERR_PEM_INVALID_ENC_IV );
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k = ( ( i & 1 ) != 0 ) ? j : j << 4;
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iv[i >> 1] = (unsigned char)( iv[i >> 1] | k );
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}
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return( 0 );
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}
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static int pem_pbkdf1( unsigned char *key, size_t keylen,
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unsigned char *iv,
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const unsigned char *pwd, size_t pwdlen )
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{
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mbedtls_md5_context md5_ctx;
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unsigned char md5sum[16];
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size_t use_len;
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int ret = MBEDTLS_ERR_THIS_CORRUPTION;
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mbedtls_md5_init( &md5_ctx );
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/*
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* key[ 0..15] = MD5(pwd || IV)
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*/
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MBEDTLS_CHK( mbedtls_md5_starts_ret( &md5_ctx ) );
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MBEDTLS_CHK( mbedtls_md5_update_ret( &md5_ctx, pwd, pwdlen ) );
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MBEDTLS_CHK( mbedtls_md5_update_ret( &md5_ctx, iv, 8 ) );
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MBEDTLS_CHK( mbedtls_md5_finish_ret( &md5_ctx, md5sum ) );
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if( keylen <= 16 )
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{
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memcpy( key, md5sum, keylen );
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goto cleanup;
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}
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memcpy( key, md5sum, 16 );
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/*
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* key[16..23] = MD5(key[ 0..15] || pwd || IV])
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*/
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MBEDTLS_CHK( mbedtls_md5_starts_ret( &md5_ctx ) );
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MBEDTLS_CHK( mbedtls_md5_update_ret( &md5_ctx, md5sum, 16 ) );
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MBEDTLS_CHK( mbedtls_md5_update_ret( &md5_ctx, pwd, pwdlen ) );
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MBEDTLS_CHK( mbedtls_md5_update_ret( &md5_ctx, iv, 8 ) );
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MBEDTLS_CHK( mbedtls_md5_finish_ret( &md5_ctx, md5sum ) );
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use_len = 16;
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if( keylen < 32 )
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use_len = keylen - 16;
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memcpy( key + 16, md5sum, use_len );
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cleanup:
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mbedtls_md5_free( &md5_ctx );
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mbedtls_platform_zeroize( md5sum, 16 );
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return( ret );
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}
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#if defined(MBEDTLS_DES_C)
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/*
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* Decrypt with DES-CBC, using PBKDF1 for key derivation
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*/
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static int pem_des_decrypt( unsigned char des_iv[8],
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unsigned char *buf, size_t buflen,
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const unsigned char *pwd, size_t pwdlen )
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{
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mbedtls_des_context des_ctx;
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unsigned char des_key[8];
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int ret = MBEDTLS_ERR_THIS_CORRUPTION;
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mbedtls_des_init( &des_ctx );
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if( ( ret = pem_pbkdf1( des_key, 8, des_iv, pwd, pwdlen ) ) != 0 )
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goto exit;
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if( ( ret = mbedtls_des_setkey_dec( &des_ctx, des_key ) ) != 0 )
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goto exit;
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ret = mbedtls_des_crypt_cbc( &des_ctx, MBEDTLS_DES_DECRYPT, buflen,
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des_iv, buf, buf );
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exit:
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mbedtls_des_free( &des_ctx );
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mbedtls_platform_zeroize( des_key, 8 );
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return( ret );
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}
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/*
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* Decrypt with 3DES-CBC, using PBKDF1 for key derivation
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*/
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static int pem_des3_decrypt( unsigned char des3_iv[8],
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unsigned char *buf, size_t buflen,
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const unsigned char *pwd, size_t pwdlen )
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{
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mbedtls_des3_context des3_ctx;
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unsigned char des3_key[24];
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int ret = MBEDTLS_ERR_THIS_CORRUPTION;
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mbedtls_des3_init( &des3_ctx );
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if( ( ret = pem_pbkdf1( des3_key, 24, des3_iv, pwd, pwdlen ) ) != 0 )
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goto exit;
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if( ( ret = mbedtls_des3_set3key_dec( &des3_ctx, des3_key ) ) != 0 )
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goto exit;
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ret = mbedtls_des3_crypt_cbc( &des3_ctx, MBEDTLS_DES_DECRYPT, buflen,
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des3_iv, buf, buf );
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exit:
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mbedtls_des3_free( &des3_ctx );
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mbedtls_platform_zeroize( des3_key, 24 );
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return( ret );
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}
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#endif /* MBEDTLS_DES_C */
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#if defined(MBEDTLS_AES_C)
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/*
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* Decrypt with AES-XXX-CBC, using PBKDF1 for key derivation
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*/
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static int pem_aes_decrypt( unsigned char aes_iv[16], unsigned int keylen,
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unsigned char *buf, size_t buflen,
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const unsigned char *pwd, size_t pwdlen )
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{
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mbedtls_aes_context aes_ctx;
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unsigned char aes_key[32];
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int ret = MBEDTLS_ERR_THIS_CORRUPTION;
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mbedtls_aes_init( &aes_ctx );
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if( ( ret = pem_pbkdf1( aes_key, keylen, aes_iv, pwd, pwdlen ) ) != 0 )
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goto exit;
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if( ( ret = mbedtls_aes_setkey_dec( &aes_ctx, aes_key, keylen * 8 ) ) != 0 )
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goto exit;
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ret = mbedtls_aes_crypt_cbc( &aes_ctx, MBEDTLS_AES_DECRYPT, buflen,
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aes_iv, buf, buf );
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exit:
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mbedtls_aes_free( &aes_ctx );
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mbedtls_platform_zeroize( aes_key, keylen );
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return( ret );
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}
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#endif /* MBEDTLS_AES_C */
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#endif /* MBEDTLS_MD5_C && MBEDTLS_CIPHER_MODE_CBC &&
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( MBEDTLS_AES_C || MBEDTLS_DES_C ) */
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int mbedtls_pem_read_buffer( mbedtls_pem_context *ctx, const char *header, const char *footer,
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const unsigned char *data, const unsigned char *pwd,
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size_t pwdlen, size_t *use_len )
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{
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int ret, enc;
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size_t len;
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unsigned char *buf;
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const unsigned char *s1, *s2, *end;
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#if defined(MBEDTLS_MD5_C) && defined(MBEDTLS_CIPHER_MODE_CBC) && \
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( defined(MBEDTLS_DES_C) || defined(MBEDTLS_AES_C) )
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unsigned char pem_iv[16];
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mbedtls_cipher_type_t enc_alg = MBEDTLS_CIPHER_NONE;
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#else
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((void) pwd);
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((void) pwdlen);
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#endif /* MBEDTLS_MD5_C && MBEDTLS_CIPHER_MODE_CBC &&
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( MBEDTLS_AES_C || MBEDTLS_DES_C ) */
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if( !ctx )
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return( MBEDTLS_ERR_PEM_BAD_INPUT_DATA );
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s1 = (unsigned char *) strstr( (const char *) data, header );
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if( !s1 )
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return( MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT );
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s2 = (unsigned char *) strstr( (const char *) data, footer );
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if( !s2 || s2 <= s1 )
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return( MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT );
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s1 += strlen( header );
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if( *s1 == ' ' ) s1++;
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if( *s1 == '\r' ) s1++;
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if( *s1 == '\n' ) s1++;
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else return( MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT );
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end = s2;
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end += strlen( footer );
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if( *end == ' ' ) end++;
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if( *end == '\r' ) end++;
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if( *end == '\n' ) end++;
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*use_len = end - data;
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enc = 0;
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if( s2 - s1 >= 22 && memcmp( s1, "Proc-Type: 4,ENCRYPTED", 22 ) == 0 )
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{
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#if defined(MBEDTLS_MD5_C) && defined(MBEDTLS_CIPHER_MODE_CBC) && \
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( defined(MBEDTLS_DES_C) || defined(MBEDTLS_AES_C) )
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enc++;
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s1 += 22;
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if( *s1 == '\r' ) s1++;
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if( *s1 == '\n' ) s1++;
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else return( MBEDTLS_ERR_PEM_INVALID_DATA );
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#if defined(MBEDTLS_DES_C)
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if( s2 - s1 >= 23 && memcmp( s1, "DEK-Info: DES-EDE3-CBC,", 23 ) == 0 )
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{
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enc_alg = MBEDTLS_CIPHER_DES_EDE3_CBC;
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s1 += 23;
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if( s2 - s1 < 16 || pem_get_iv( s1, pem_iv, 8 ) != 0 )
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return( MBEDTLS_ERR_PEM_INVALID_ENC_IV );
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s1 += 16;
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}
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else if( s2 - s1 >= 18 && memcmp( s1, "DEK-Info: DES-CBC,", 18 ) == 0 )
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{
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enc_alg = MBEDTLS_CIPHER_DES_CBC;
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s1 += 18;
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if( s2 - s1 < 16 || pem_get_iv( s1, pem_iv, 8) != 0 )
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return( MBEDTLS_ERR_PEM_INVALID_ENC_IV );
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s1 += 16;
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}
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#endif /* MBEDTLS_DES_C */
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#if defined(MBEDTLS_AES_C)
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if( s2 - s1 >= 14 && memcmp( s1, "DEK-Info: AES-", 14 ) == 0 )
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{
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if( s2 - s1 < 22 )
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return( MBEDTLS_ERR_PEM_UNKNOWN_ENC_ALG );
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else if( memcmp( s1, "DEK-Info: AES-128-CBC,", 22 ) == 0 )
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enc_alg = MBEDTLS_CIPHER_AES_128_CBC;
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else if( memcmp( s1, "DEK-Info: AES-192-CBC,", 22 ) == 0 )
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enc_alg = MBEDTLS_CIPHER_AES_192_CBC;
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else if( memcmp( s1, "DEK-Info: AES-256-CBC,", 22 ) == 0 )
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enc_alg = MBEDTLS_CIPHER_AES_256_CBC;
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else
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return( MBEDTLS_ERR_PEM_UNKNOWN_ENC_ALG );
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s1 += 22;
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if( s2 - s1 < 32 || pem_get_iv( s1, pem_iv, 16 ) != 0 )
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return( MBEDTLS_ERR_PEM_INVALID_ENC_IV );
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s1 += 32;
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}
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#endif /* MBEDTLS_AES_C */
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if( enc_alg == MBEDTLS_CIPHER_NONE )
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return( MBEDTLS_ERR_PEM_UNKNOWN_ENC_ALG );
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if( *s1 == '\r' ) s1++;
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if( *s1 == '\n' ) s1++;
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else return( MBEDTLS_ERR_PEM_INVALID_DATA );
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#else
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return( MBEDTLS_ERR_PEM_FEATURE_UNAVAILABLE );
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#endif /* MBEDTLS_MD5_C && MBEDTLS_CIPHER_MODE_CBC &&
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( MBEDTLS_AES_C || MBEDTLS_DES_C ) */
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}
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if( s1 >= s2 )
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return( MBEDTLS_ERR_PEM_INVALID_DATA );
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ret = mbedtls_base64_decode( NULL, 0, &len, s1, s2 - s1 );
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if( ret == MBEDTLS_ERR_BASE64_INVALID_CHARACTER )
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return( MBEDTLS_ERR_PEM_INVALID_DATA + ret );
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if( ( buf = mbedtls_calloc( 1, len ) ) == NULL )
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return( MBEDTLS_ERR_PEM_ALLOC_FAILED );
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if( ( ret = mbedtls_base64_decode( buf, len, &len, s1, s2 - s1 ) ) != 0 )
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{
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mbedtls_platform_zeroize( buf, len );
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mbedtls_free( buf );
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return( MBEDTLS_ERR_PEM_INVALID_DATA + ret );
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}
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if( enc != 0 )
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{
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#if defined(MBEDTLS_MD5_C) && defined(MBEDTLS_CIPHER_MODE_CBC) && \
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( defined(MBEDTLS_DES_C) || defined(MBEDTLS_AES_C) )
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if( pwd == NULL )
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{
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mbedtls_platform_zeroize( buf, len );
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mbedtls_free( buf );
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return( MBEDTLS_ERR_PEM_PASSWORD_REQUIRED );
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}
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ret = 0;
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#if defined(MBEDTLS_DES_C)
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if( enc_alg == MBEDTLS_CIPHER_DES_EDE3_CBC )
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ret = pem_des3_decrypt( pem_iv, buf, len, pwd, pwdlen );
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else if( enc_alg == MBEDTLS_CIPHER_DES_CBC )
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ret = pem_des_decrypt( pem_iv, buf, len, pwd, pwdlen );
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#endif /* MBEDTLS_DES_C */
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#if defined(MBEDTLS_AES_C)
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if( enc_alg == MBEDTLS_CIPHER_AES_128_CBC )
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ret = pem_aes_decrypt( pem_iv, 16, buf, len, pwd, pwdlen );
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else if( enc_alg == MBEDTLS_CIPHER_AES_192_CBC )
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ret = pem_aes_decrypt( pem_iv, 24, buf, len, pwd, pwdlen );
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else if( enc_alg == MBEDTLS_CIPHER_AES_256_CBC )
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ret = pem_aes_decrypt( pem_iv, 32, buf, len, pwd, pwdlen );
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#endif /* MBEDTLS_AES_C */
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if( ret != 0 )
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{
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mbedtls_free( buf );
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return( ret );
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}
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/*
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* The result will be ASN.1 starting with a SEQUENCE tag, with 1 to 3
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* length bytes (allow 4 to be sure) in all known use cases.
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*
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* Use that as a heuristic to try to detect password mismatches.
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*/
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if( len <= 2 || buf[0] != 0x30 || buf[1] > 0x83 )
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{
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mbedtls_platform_zeroize( buf, len );
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mbedtls_free( buf );
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return( MBEDTLS_ERR_PEM_PASSWORD_MISMATCH );
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}
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#else
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mbedtls_platform_zeroize( buf, len );
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mbedtls_free( buf );
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return( MBEDTLS_ERR_PEM_FEATURE_UNAVAILABLE );
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#endif /* MBEDTLS_MD5_C && MBEDTLS_CIPHER_MODE_CBC &&
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( MBEDTLS_AES_C || MBEDTLS_DES_C ) */
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}
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ctx->buf = buf;
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ctx->buflen = len;
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return( 0 );
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}
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void mbedtls_pem_free( mbedtls_pem_context *ctx )
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{
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if ( ctx->buf )
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{
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mbedtls_platform_zeroize( ctx->buf, ctx->buflen );
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mbedtls_free( ctx->buf );
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}
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mbedtls_free( ctx->info );
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mbedtls_platform_zeroize( ctx, sizeof( mbedtls_pem_context ) );
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}
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#endif /* MBEDTLS_PEM_PARSE_C */
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#if defined(MBEDTLS_PEM_WRITE_C)
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int mbedtls_pem_write_buffer( const char *header, const char *footer,
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const unsigned char *der_data, size_t der_len,
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unsigned char *buf, size_t buf_len, size_t *olen )
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{
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int ret = MBEDTLS_ERR_THIS_CORRUPTION;
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unsigned char *encode_buf = NULL, *c, *p = buf;
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size_t len = 0, use_len, add_len = 0;
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mbedtls_base64_encode( NULL, 0, &use_len, der_data, der_len );
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add_len = strlen( header ) + strlen( footer ) + ( use_len / 64 ) + 1;
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if( use_len + add_len > buf_len )
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{
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*olen = use_len + add_len;
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return( MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL );
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}
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if( use_len != 0 &&
|
|
( ( encode_buf = mbedtls_calloc( 1, use_len ) ) == NULL ) )
|
|
return( MBEDTLS_ERR_PEM_ALLOC_FAILED );
|
|
if( ( ret = mbedtls_base64_encode( encode_buf, use_len, &use_len, der_data,
|
|
der_len ) ) != 0 )
|
|
{
|
|
mbedtls_free( encode_buf );
|
|
return( ret );
|
|
}
|
|
memcpy( p, header, strlen( header ) );
|
|
p += strlen( header );
|
|
c = encode_buf;
|
|
while( use_len )
|
|
{
|
|
len = ( use_len > 64 ) ? 64 : use_len;
|
|
memcpy( p, c, len );
|
|
use_len -= len;
|
|
p += len;
|
|
c += len;
|
|
*p++ = '\n';
|
|
}
|
|
memcpy( p, footer, strlen( footer ) );
|
|
p += strlen( footer );
|
|
*p++ = '\0';
|
|
*olen = p - buf;
|
|
/* Clean any remaining data previously written to the buffer */
|
|
mbedtls_platform_zeroize( buf + *olen, buf_len - *olen );
|
|
mbedtls_free( encode_buf );
|
|
return( 0 );
|
|
}
|
|
#endif /* MBEDTLS_PEM_WRITE_C */
|
|
|
|
#endif /* MBEDTLS_PEM_PARSE_C || MBEDTLS_PEM_WRITE_C */
|
|
|