GCryptUtilities.cpp [plain text]
#include "config.h"
#include "GCryptUtilities.h"
namespace WebCore {
Optional<const char*> hashAlgorithmName(CryptoAlgorithmIdentifier identifier)
{
switch (identifier) {
case CryptoAlgorithmIdentifier::SHA_1:
return "sha1";
case CryptoAlgorithmIdentifier::SHA_224:
return "sha224";
case CryptoAlgorithmIdentifier::SHA_256:
return "sha256";
case CryptoAlgorithmIdentifier::SHA_384:
return "sha384";
case CryptoAlgorithmIdentifier::SHA_512:
return "sha512";
default:
return WTF::nullopt;
}
}
Optional<int> hmacAlgorithm(CryptoAlgorithmIdentifier identifier)
{
switch (identifier) {
case CryptoAlgorithmIdentifier::SHA_1:
return GCRY_MAC_HMAC_SHA1;
case CryptoAlgorithmIdentifier::SHA_224:
return GCRY_MAC_HMAC_SHA224;
case CryptoAlgorithmIdentifier::SHA_256:
return GCRY_MAC_HMAC_SHA256;
case CryptoAlgorithmIdentifier::SHA_384:
return GCRY_MAC_HMAC_SHA384;
case CryptoAlgorithmIdentifier::SHA_512:
return GCRY_MAC_HMAC_SHA512;
default:
return WTF::nullopt;
}
}
Optional<int> digestAlgorithm(CryptoAlgorithmIdentifier identifier)
{
switch (identifier) {
case CryptoAlgorithmIdentifier::SHA_1:
return GCRY_MD_SHA1;
case CryptoAlgorithmIdentifier::SHA_224:
return GCRY_MD_SHA224;
case CryptoAlgorithmIdentifier::SHA_256:
return GCRY_MD_SHA256;
case CryptoAlgorithmIdentifier::SHA_384:
return GCRY_MD_SHA384;
case CryptoAlgorithmIdentifier::SHA_512:
return GCRY_MD_SHA512;
default:
return WTF::nullopt;
}
}
Optional<PAL::CryptoDigest::Algorithm> hashCryptoDigestAlgorithm(CryptoAlgorithmIdentifier identifier)
{
switch (identifier) {
case CryptoAlgorithmIdentifier::SHA_1:
return PAL::CryptoDigest::Algorithm::SHA_1;
case CryptoAlgorithmIdentifier::SHA_224:
return PAL::CryptoDigest::Algorithm::SHA_224;
case CryptoAlgorithmIdentifier::SHA_256:
return PAL::CryptoDigest::Algorithm::SHA_256;
case CryptoAlgorithmIdentifier::SHA_384:
return PAL::CryptoDigest::Algorithm::SHA_384;
case CryptoAlgorithmIdentifier::SHA_512:
return PAL::CryptoDigest::Algorithm::SHA_512;
default:
return WTF::nullopt;
}
}
Optional<size_t> mpiLength(gcry_mpi_t paramMPI)
{
size_t dataLength = 0;
gcry_error_t error = gcry_mpi_print(GCRYMPI_FMT_USG, nullptr, 0, &dataLength, paramMPI);
if (error != GPG_ERR_NO_ERROR) {
PAL::GCrypt::logError(error);
return WTF::nullopt;
}
return dataLength;
}
Optional<size_t> mpiLength(gcry_sexp_t paramSexp)
{
PAL::GCrypt::Handle<gcry_mpi_t> paramMPI(gcry_sexp_nth_mpi(paramSexp, 1, GCRYMPI_FMT_USG));
if (!paramMPI)
return WTF::nullopt;
return mpiLength(paramMPI);
}
Optional<Vector<uint8_t>> mpiData(gcry_mpi_t paramMPI)
{
auto length = mpiLength(paramMPI);
if (!length)
return WTF::nullopt;
Vector<uint8_t> output(*length);
gcry_error_t error = gcry_mpi_print(GCRYMPI_FMT_USG, output.data(), output.size(), nullptr, paramMPI);
if (error != GPG_ERR_NO_ERROR) {
PAL::GCrypt::logError(error);
return WTF::nullopt;
}
return output;
}
Optional<Vector<uint8_t>> mpiZeroPrefixedData(gcry_mpi_t paramMPI, size_t targetLength)
{
auto length = mpiLength(paramMPI);
if (!length || *length > targetLength)
return WTF::nullopt;
Vector<uint8_t> output(targetLength, 0);
size_t prefixLength = targetLength - *length;
gcry_error_t error = gcry_mpi_print(GCRYMPI_FMT_USG, output.data() + prefixLength, targetLength, nullptr, paramMPI);
if (error != GPG_ERR_NO_ERROR) {
PAL::GCrypt::logError(error);
return WTF::nullopt;
}
return output;
}
Optional<Vector<uint8_t>> mpiData(gcry_sexp_t paramSexp)
{
PAL::GCrypt::Handle<gcry_mpi_t> paramMPI(gcry_sexp_nth_mpi(paramSexp, 1, GCRYMPI_FMT_USG));
if (!paramMPI)
return WTF::nullopt;
return mpiData(paramMPI);
}
Optional<Vector<uint8_t>> mpiZeroPrefixedData(gcry_sexp_t paramSexp, size_t targetLength)
{
PAL::GCrypt::Handle<gcry_mpi_t> paramMPI(gcry_sexp_nth_mpi(paramSexp, 1, GCRYMPI_FMT_USG));
if (!paramMPI)
return WTF::nullopt;
return mpiZeroPrefixedData(paramMPI, targetLength);
}
Optional<Vector<uint8_t>> mpiSignedData(gcry_mpi_t mpi)
{
auto data = mpiData(mpi);
if (!data)
return WTF::nullopt;
if (data->at(0) & 0x80)
data->insert(0, 0x00);
return data;
}
Optional<Vector<uint8_t>> mpiSignedData(gcry_sexp_t paramSexp)
{
auto data = mpiData(paramSexp);
if (!data)
return WTF::nullopt;
if (data->at(0) & 0x80)
data->insert(0, 0x00);
return data;
}
}