diff --git a/Source/Core/Common/Crypto/SHA1.cpp b/Source/Core/Common/Crypto/SHA1.cpp index f87bbd2c6d..8c4aa646bd 100644 --- a/Source/Core/Common/Crypto/SHA1.cpp +++ b/Source/Core/Common/Crypto/SHA1.cpp @@ -385,4 +385,20 @@ Digest CalculateDigest(const u8* msg, size_t len) ctx->Update(msg, len); return ctx->Finish(); } + +std::string DigestToString(const Digest& digest) +{ + static constexpr std::array lookup = {'0', '1', '2', '3', '4', '5', '6', '7', + '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'}; + std::string hash; + hash.reserve(digest.size() * 2); + for (size_t i = 0; i < digest.size(); ++i) + { + const u8 upper = static_cast((digest[i] >> 4) & 0xf); + const u8 lower = static_cast(digest[i] & 0xf); + hash.push_back(lookup[upper]); + hash.push_back(lookup[lower]); + } + return hash; +} } // namespace Common::SHA1 diff --git a/Source/Core/Common/Crypto/SHA1.h b/Source/Core/Common/Crypto/SHA1.h index 83c9875a71..b828c28f15 100644 --- a/Source/Core/Common/Crypto/SHA1.h +++ b/Source/Core/Common/Crypto/SHA1.h @@ -51,4 +51,6 @@ inline Digest CalculateDigest(const std::array& msg) static_assert(std::is_trivially_copyable_v); return CalculateDigest(reinterpret_cast(msg.data()), sizeof(msg)); } + +std::string DigestToString(const Digest& digest); } // namespace Common::SHA1