diff options
Diffstat (limited to 'comm/third_party/botan/src/lib/prov/commoncrypto/commoncrypto_hash.cpp')
| -rw-r--r-- | comm/third_party/botan/src/lib/prov/commoncrypto/commoncrypto_hash.cpp | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/prov/commoncrypto/commoncrypto_hash.cpp b/comm/third_party/botan/src/lib/prov/commoncrypto/commoncrypto_hash.cpp new file mode 100644 index 0000000000..f6203fb417 --- /dev/null +++ b/comm/third_party/botan/src/lib/prov/commoncrypto/commoncrypto_hash.cpp @@ -0,0 +1,146 @@ +/* +* CommonCrypto Hash Functions +* (C) 2018 Jose Pereira +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#include <botan/internal/commoncrypto.h> +#include <botan/hash.h> +#include <unordered_map> + +#include <CommonCrypto/CommonCrypto.h> + +namespace Botan { + +namespace { + +template <class CTX> +class CommonCrypto_HashFunction final : public HashFunction + { + public: + + struct digest_config_t { + std::string name; + size_t digestLength; + size_t blockSize; + int (*init)(CTX *); + int (*update)(CTX *, const void *, CC_LONG len); + int (*final)(unsigned char *, CTX*); + }; + + void clear() override + { + if(m_info.init(&m_ctx) != 1) + throw CommonCrypto_Error("CC_" + m_info.name + "_Init"); + } + + std::string provider() const override { return "commoncrypto"; } + std::string name() const override { return m_info.name; } + + HashFunction* clone() const override + { + return new CommonCrypto_HashFunction(m_info); + } + + std::unique_ptr<HashFunction> copy_state() const override + { + return std::unique_ptr<CommonCrypto_HashFunction>( + new CommonCrypto_HashFunction(m_info, m_ctx)); + } + + size_t output_length() const override + { + return m_info.digestLength; + } + + size_t hash_block_size() const override + { + return m_info.blockSize; + } + + CommonCrypto_HashFunction(const digest_config_t& info) : + m_info(info) + { + clear(); + } + + CommonCrypto_HashFunction(const digest_config_t& info, const CTX &ctx) : + m_ctx(ctx), m_info(info) {} + + private: + void add_data(const uint8_t input[], size_t length) override + { + /* update len parameter is 32 bit unsigned integer, feed input in parts */ + while (length > 0) + { + CC_LONG update_len = (length > 0xFFFFFFFFUL) ? 0xFFFFFFFFUL : static_cast<CC_LONG>(length); + m_info.update(&m_ctx, input, update_len); + input += update_len; + length -= update_len; + } + } + + void final_result(uint8_t output[]) override + { + if(m_info.final(output, &m_ctx) != 1) + throw CommonCrypto_Error("CC_" + m_info.name + "_Final"); + clear(); + } + + CTX m_ctx; + digest_config_t m_info; + }; +} + +std::unique_ptr<HashFunction> +make_commoncrypto_hash(const std::string& name) + { +#define MAKE_COMMONCRYPTO_HASH_3(name, hash, ctx) \ + std::unique_ptr<HashFunction>( \ + new CommonCrypto_HashFunction<CC_ ## ctx ## _CTX >({ \ + name, \ + CC_ ## hash ## _DIGEST_LENGTH, \ + CC_ ## hash ## _BLOCK_BYTES, \ + CC_ ## hash ## _Init, \ + CC_ ## hash ## _Update, \ + CC_ ## hash ## _Final \ + })); + +#define MAKE_COMMONCRYPTO_HASH_2(name, id) \ + MAKE_COMMONCRYPTO_HASH_3(name, id, id) + +#define MAKE_COMMONCRYPTO_HASH_1(id) \ + MAKE_COMMONCRYPTO_HASH_2(#id, id) + +#if defined(BOTAN_HAS_SHA2_32) + if(name == "SHA-224") + return MAKE_COMMONCRYPTO_HASH_3(name, SHA224, SHA256); + if(name == "SHA-256") + return MAKE_COMMONCRYPTO_HASH_2(name, SHA256); +#endif +#if defined(BOTAN_HAS_SHA2_64) + if(name == "SHA-384") + return MAKE_COMMONCRYPTO_HASH_3(name, SHA384, SHA512); + if(name == "SHA-512") + return MAKE_COMMONCRYPTO_HASH_2(name, SHA512); +#endif + +#if defined(BOTAN_HAS_SHA1) + if(name == "SHA-160" || name == "SHA-1" || name == "SHA1") + return MAKE_COMMONCRYPTO_HASH_2(name, SHA1); +#endif + +#if defined(BOTAN_HAS_MD5) + if(name == "MD5") + return MAKE_COMMONCRYPTO_HASH_1(MD5); +#endif + +#if defined(BOTAN_HAS_MD4) + if(name == "MD4") + return MAKE_COMMONCRYPTO_HASH_1(MD4); +#endif + return nullptr; + } + +} |