Preparations for clang-format
est31
parent
55e8af5ee3
commit
2a90017b0f
102
srp.c
102
srp.c
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@ -26,12 +26,14 @@
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*
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*/
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// clang-format off
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#ifdef WIN32
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#include <windows.h>
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#include <wincrypt.h>
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#else
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#include <time.h>
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#endif
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// clang-format on
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#include <stdlib.h>
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#include <string.h>
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@ -66,14 +68,17 @@ void *(*srp_alloc) (size_t) = &malloc;
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void *(*srp_realloc) (void *, size_t) = &realloc;
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void (*srp_free) (void *) = &free;
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// clang-format off
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void srp_set_memory_functions(
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void *(*new_srp_alloc) (size_t),
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void *(*new_srp_realloc) (void *, size_t),
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void (*new_srp_free) (void *)) {
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void *(*new_srp_alloc)(size_t),
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void *(*new_srp_realloc)(void *, size_t),
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void (*new_srp_free)(void *))
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{
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srp_alloc = new_srp_alloc;
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srp_realloc = new_srp_realloc;
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srp_free = new_srp_free;
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}
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// clang-format on
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typedef struct
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{
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@ -90,20 +95,24 @@ struct NGHex
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/* All constants here were pulled from Appendix A of RFC 5054 */
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static struct NGHex global_Ng_constants[] = {
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{ /* 1024 */
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"EEAF0AB9ADB38DD69C33F80AFA8FC5E86072618775FF3C0B9EA2314C9C256576D674DF7496"
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"EA81D3383B4813D692C6E0E0D5D8E250B98BE48E495C1D6089DAD15DC7D7B46154D6B6CE8E"
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"F4AD69B15D4982559B297BCF1885C529F566660E57EC68EDBC3C05726CC02FD4CBF4976EAA"
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"9AFD5138FE8376435B9FC61D2FC0EB06E3",
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"EEAF0AB9ADB38DD69C33F80AFA8FC5E86072618775FF3C0B9EA2314C"
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"9C256576D674DF7496EA81D3383B4813D692C6E0E0D5D8E250B98BE4"
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"8E495C1D6089DAD15DC7D7B46154D6B6CE8EF4AD69B15D4982559B29"
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"7BCF1885C529F566660E57EC68EDBC3C05726CC02FD4CBF4976EAA9A"
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"FD5138FE8376435B9FC61D2FC0EB06E3",
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"2"
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},
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{ /* 2048 */
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"AC6BDB41324A9A9BF166DE5E1389582FAF72B6651987EE07FC3192943DB56050A37329CBB4"
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"A099ED8193E0757767A13DD52312AB4B03310DCD7F48A9DA04FD50E8083969EDB767B0CF60"
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"95179A163AB3661A05FBD5FAAAE82918A9962F0B93B855F97993EC975EEAA80D740ADBF4FF"
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"747359D041D5C33EA71D281E446B14773BCA97B43A23FB801676BD207A436C6481F1D2B907"
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"8717461A5B9D32E688F87748544523B524B0D57D5EA77A2775D2ECFA032CFBDBF52FB37861"
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"60279004E57AE6AF874E7303CE53299CCC041C7BC308D82A5698F3A8D0C38271AE35F8E9DB"
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"FBB694B5C803D89F7AE435DE236D525F54759B65E372FCD68EF20FA7111F9E4AFF73",
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"AC6BDB41324A9A9BF166DE5E1389582FAF72B6651987EE07FC319294"
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"3DB56050A37329CBB4A099ED8193E0757767A13DD52312AB4B03310D"
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"CD7F48A9DA04FD50E8083969EDB767B0CF6095179A163AB3661A05FB"
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"D5FAAAE82918A9962F0B93B855F97993EC975EEAA80D740ADBF4FF74"
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"7359D041D5C33EA71D281E446B14773BCA97B43A23FB801676BD207A"
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"436C6481F1D2B9078717461A5B9D32E688F87748544523B524B0D57D"
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"5EA77A2775D2ECFA032CFBDBF52FB3786160279004E57AE6AF874E73"
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"03CE53299CCC041C7BC308D82A5698F3A8D0C38271AE35F8E9DBFBB6"
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"94B5C803D89F7AE435DE236D525F54759B65E372FCD68EF20FA7111F"
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"9E4AFF73",
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"2"
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},
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{ /* 4096 */
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@ -254,19 +263,23 @@ struct SRPUser
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unsigned char session_key[SHA512_DIGEST_LENGTH];
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};
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// clang-format off
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static int hash_init(SRP_HashAlgorithm alg, HashCTX *c)
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{
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switch (alg) {
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#ifdef CSRP_USE_SHA1
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case SRP_SHA1: return SHA1_Init(&c->sha);
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#endif
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/*case SRP_SHA224: return SHA224_Init(&c->sha256);*/
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/*
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case SRP_SHA224: return SHA224_Init(&c->sha256);
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*/
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#ifdef CSRP_USE_SHA256
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case SRP_SHA256: return SHA256_Init(&c->sha256);
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#endif
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/*case SRP_SHA384: return SHA384_Init(&c->sha512);
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case SRP_SHA512: return SHA512_Init(&c->sha512);*/
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/*
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case SRP_SHA384: return SHA384_Init(&c->sha512);
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case SRP_SHA512: return SHA512_Init(&c->sha512);
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*/
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default: return -1;
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};
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}
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@ -276,12 +289,16 @@ static int hash_update( SRP_HashAlgorithm alg, HashCTX *c, const void *data, siz
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#ifdef CSRP_USE_SHA1
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case SRP_SHA1: return SHA1_Update(&c->sha, data, len);
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#endif
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/*case SRP_SHA224: return SHA224_Update(&c->sha256, data, len);*/
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/*
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case SRP_SHA224: return SHA224_Update(&c->sha256, data, len);
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*/
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#ifdef CSRP_USE_SHA256
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case SRP_SHA256: return SHA256_Update(&c->sha256, data, len);
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#endif
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/*case SRP_SHA384: return SHA384_Update( &c->sha512, data, len );
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case SRP_SHA512: return SHA512_Update( &c->sha512, data, len );*/
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/*
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case SRP_SHA384: return SHA384_Update(&c->sha512, data, len);
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case SRP_SHA512: return SHA512_Update(&c->sha512, data, len);
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*/
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default: return -1;
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};
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}
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@ -291,12 +308,16 @@ static int hash_final( SRP_HashAlgorithm alg, HashCTX *c, unsigned char *md )
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#ifdef CSRP_USE_SHA1
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case SRP_SHA1: return SHA1_Final(md, &c->sha);
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#endif
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/*case SRP_SHA224: return SHA224_Final(md, &c->sha256);*/
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/*
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case SRP_SHA224: return SHA224_Final(md, &c->sha256);
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*/
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#ifdef CSRP_USE_SHA256
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case SRP_SHA256: return SHA256_Final(md, &c->sha256);
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#endif
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/*case SRP_SHA384: return SHA384_Final(md, &c->sha512);
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case SRP_SHA512: return SHA512_Final(md, &c->sha512);*/
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/*
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case SRP_SHA384: return SHA384_Final(md, &c->sha512);
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case SRP_SHA512: return SHA512_Final(md, &c->sha512);
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*/
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default: return -1;
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};
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}
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@ -306,12 +327,16 @@ static unsigned char *hash(SRP_HashAlgorithm alg, const unsigned char *d, size_t
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#ifdef CSRP_USE_SHA1
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case SRP_SHA1: return SHA1(d, n, md);
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#endif
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/*case SRP_SHA224: return SHA224( d, n, md );*/
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/*
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case SRP_SHA224: return SHA224( d, n, md );
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*/
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#ifdef CSRP_USE_SHA256
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case SRP_SHA256: return SHA256(d, n, md);
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#endif
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/*case SRP_SHA384: return SHA384( d, n, md );
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case SRP_SHA512: return SHA512( d, n, md );*/
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/*
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case SRP_SHA384: return SHA384( d, n, md );
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case SRP_SHA512: return SHA512( d, n, md );
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*/
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default: return 0;
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};
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}
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@ -321,15 +346,20 @@ static size_t hash_length(SRP_HashAlgorithm alg)
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#ifdef CSRP_USE_SHA1
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case SRP_SHA1: return SHA_DIGEST_LENGTH;
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#endif
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/*case SRP_SHA224: return SHA224_DIGEST_LENGTH;*/
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/*
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case SRP_SHA224: return SHA224_DIGEST_LENGTH;
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*/
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#ifdef CSRP_USE_SHA256
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case SRP_SHA256: return SHA256_DIGEST_LENGTH;
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#endif
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/*case SRP_SHA384: return SHA384_DIGEST_LENGTH;
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case SRP_SHA512: return SHA512_DIGEST_LENGTH;*/
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/*
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case SRP_SHA384: return SHA384_DIGEST_LENGTH;
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case SRP_SHA512: return SHA512_DIGEST_LENGTH;
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*/
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default: return -1;
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};
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}
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// clang-format on
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inline static int mpz_num_bytes(const mpz_t op)
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{
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@ -563,6 +593,7 @@ static SRP_Result init_random()
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*
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***********************************************************************************************************/
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// clang-format off
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SRP_Result srp_create_salted_verification_key( SRP_HashAlgorithm alg,
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SRP_NGType ng_type, const char *username_for_verifier,
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const unsigned char *password, size_t len_password,
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@ -574,6 +605,8 @@ SRP_Result srp_create_salted_verification_key( SRP_HashAlgorithm alg,
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mpz_t v; mpz_init(v);
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mpz_t x; mpz_init(x);
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// clang-format on
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NGConstant *ng = new_ng(ng_type, n_hex, g_hex);
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if (!ng)
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@ -624,6 +657,7 @@ error_and_exit:
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}
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// clang-format off
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/* Out: bytes_B, len_B.
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*
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@ -648,6 +682,7 @@ struct SRPVerifier *srp_verifier_new(SRP_HashAlgorithm alg,
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mpz_t tmp1; mpz_init(tmp1);
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mpz_t tmp2; mpz_init(tmp2);
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mpz_t tmp3; mpz_init(tmp3);
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// clang-format on
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size_t ulen = strlen(username) + 1;
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NGConstant *ng = new_ng(ng_type, n_hex, g_hex);
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struct SRPVerifier *ver = 0;
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@ -925,12 +960,13 @@ size_t srp_user_get_session_key_length(struct SRPUser *usr)
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return hash_length(usr->hash_alg);
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}
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// clang-format off
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/* Output: username, bytes_A, len_A */
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SRP_Result srp_user_start_authentication(struct SRPUser *usr, char **username,
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const unsigned char *bytes_a, size_t len_a,
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unsigned char **bytes_A, size_t *len_A)
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{
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// clang-format on
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if (bytes_a) {
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mpz_from_bin(bytes_a, len_a, usr->a);
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} else {
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@ -962,6 +998,7 @@ error_and_exit:
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}
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// clang-format off
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/* Output: bytes_M. Buffer length is SHA512_DIGEST_LENGTH */
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void srp_user_process_challenge(struct SRPUser *usr,
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const unsigned char *bytes_s, size_t len_s,
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@ -977,6 +1014,7 @@ void srp_user_process_challenge(struct SRPUser *usr,
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mpz_t tmp2; mpz_init(tmp2);
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mpz_t tmp3; mpz_init(tmp3);
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mpz_t tmp4; mpz_init(tmp4);
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// clang-format on
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*len_M = 0;
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*bytes_M = 0;
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@ -1001,6 +1039,7 @@ void srp_user_process_challenge(struct SRPUser *usr,
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srp_dbg_num(v, "Client calculated v: ");
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// clang-format off
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/* S = (B - k*(g^x)) ^ (a + ux) */
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mpz_mul(tmp1, u, x);
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mpz_add(tmp2, usr->a, tmp1); /* tmp2 = (a + ux) */
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@ -1008,6 +1047,7 @@ void srp_user_process_challenge(struct SRPUser *usr,
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mpz_mulm(tmp3, k, tmp1, usr->ng->N, tmp4); /* tmp3 = k*(g^x) */
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mpz_subm(tmp1, B, tmp3, usr->ng->N, tmp4); /* tmp1 = (B - K*(g^x)) */
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mpz_powm(usr->S, tmp1, tmp2, usr->ng->N);
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// clang-format on
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if (!hash_num(usr->hash_alg, usr->S, usr->session_key))
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goto cleanup_and_exit;
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23
srp.h
23
srp.h
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@ -84,6 +84,8 @@ typedef enum
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SRP_OK,
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} SRP_Result;
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// clang-format off
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/* Sets the memory functions used by srp.
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* Note: this doesn't set the memory functions used by gmp,
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* but it is supported to have different functions for srp and gmp.
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@ -101,17 +103,18 @@ void srp_set_memory_functions(
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* The n_hex and g_hex parameters should be 0 unless SRP_NG_CUSTOM is used for ng_type.
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* If provided, they must contain ASCII text of the hexidecimal notation.
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*
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* If bytes_s == NULL, it is filled with random data. The caller is responsible for freeing.
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* If bytes_s == NULL, it is filled with random data.
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* The caller is responsible for freeing.
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*
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* Returns SRP_OK on success, and SRP_ERR on error.
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* bytes_s might be in this case invalid, don't free it.
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*/
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SRP_Result srp_create_salted_verification_key( SRP_HashAlgorithm alg,
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SRP_Result srp_create_salted_verification_key(SRP_HashAlgorithm alg,
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SRP_NGType ng_type, const char *username_for_verifier,
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const unsigned char *password, size_t len_password,
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unsigned char **bytes_s, size_t *len_s,
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unsigned char **bytes_v, size_t *len_v,
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const char * n_hex, const char *g_hex );
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const char *n_hex, const char *g_hex);
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/* Out: bytes_B, len_B.
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*
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@ -132,6 +135,8 @@ struct SRPVerifier* srp_verifier_new(SRP_HashAlgorithm alg, SRP_NGType ng_type,
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unsigned char** bytes_B, size_t *len_B,
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const char* n_hex, const char* g_hex);
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// clang-format on
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void srp_verifier_delete( struct SRPVerifier* ver );
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@ -175,11 +180,14 @@ const unsigned char* srp_user_get_session_key(struct SRPUser* usr, size_t* key_l
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size_t srp_user_get_session_key_length(struct SRPUser* usr);
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/* Output: username, bytes_A, len_A. If you don't want it get written, set username to NULL.
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// clang-format off
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/* Output: username, bytes_A, len_A.
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* If you don't want it get written, set username to NULL.
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* If bytes_a == NULL, random data is used for a. */
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SRP_Result srp_user_start_authentication(struct SRPUser* usr, char** username,
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const unsigned char* bytes_a, size_t len_a,
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unsigned char** bytes_A, size_t* len_A);
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SRP_Result srp_user_start_authentication(struct SRPUser* usr, char **username,
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const unsigned char *bytes_a, size_t len_a,
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unsigned char **bytes_A, size_t* len_A);
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/* Output: bytes_M, len_M (len_M may be null and will always be
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* srp_user_get_session_key_length() bytes in size) */
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@ -187,6 +195,7 @@ void srp_user_process_challenge(struct SRPUser *usr,
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const unsigned char *bytes_s, size_t len_s,
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const unsigned char *bytes_B, size_t len_B,
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unsigned char **bytes_M, size_t *len_M);
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// clang-format on
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/* bytes_HAMK must be exactly srp_user_get_session_key_length() bytes in size */
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void srp_user_verify_session(struct SRPUser* usr, const unsigned char* bytes_HAMK);
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