diff options
Diffstat (limited to 'modules/libmar/verify/MacVerifyCrypto.cpp')
| -rw-r--r-- | modules/libmar/verify/MacVerifyCrypto.cpp | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/modules/libmar/verify/MacVerifyCrypto.cpp b/modules/libmar/verify/MacVerifyCrypto.cpp new file mode 100644 index 0000000000..16c9028cfa --- /dev/null +++ b/modules/libmar/verify/MacVerifyCrypto.cpp @@ -0,0 +1,213 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include <CoreFoundation/CoreFoundation.h> +#include <Security/Security.h> +#include <dlfcn.h> + +#include "cryptox.h" + +// We declare the necessary parts of the Security Transforms API here since +// we're building with the 10.6 SDK, which doesn't know about Security +// Transforms. +#ifdef __cplusplus +extern "C" { +#endif + const CFStringRef kSecTransformInputAttributeName = CFSTR("INPUT"); + typedef CFTypeRef SecTransformRef; + typedef struct OpaqueSecKeyRef* SecKeyRef; + + typedef SecTransformRef (*SecTransformCreateReadTransformWithReadStreamFunc) + (CFReadStreamRef inputStream); + SecTransformCreateReadTransformWithReadStreamFunc + SecTransformCreateReadTransformWithReadStreamPtr = NULL; + typedef CFTypeRef (*SecTransformExecuteFunc)(SecTransformRef transform, + CFErrorRef* error); + SecTransformExecuteFunc SecTransformExecutePtr = NULL; + typedef SecTransformRef (*SecVerifyTransformCreateFunc)(SecKeyRef key, + CFDataRef signature, + CFErrorRef* error); + SecVerifyTransformCreateFunc SecVerifyTransformCreatePtr = NULL; + typedef Boolean (*SecTransformSetAttributeFunc)(SecTransformRef transform, + CFStringRef key, + CFTypeRef value, + CFErrorRef* error); + SecTransformSetAttributeFunc SecTransformSetAttributePtr = NULL; +#ifdef __cplusplus +} +#endif + +CryptoX_Result +CryptoMac_InitCryptoProvider() +{ + if (!SecTransformCreateReadTransformWithReadStreamPtr) { + SecTransformCreateReadTransformWithReadStreamPtr = + (SecTransformCreateReadTransformWithReadStreamFunc) + dlsym(RTLD_DEFAULT, "SecTransformCreateReadTransformWithReadStream"); + } + if (!SecTransformExecutePtr) { + SecTransformExecutePtr = (SecTransformExecuteFunc) + dlsym(RTLD_DEFAULT, "SecTransformExecute"); + } + if (!SecVerifyTransformCreatePtr) { + SecVerifyTransformCreatePtr = (SecVerifyTransformCreateFunc) + dlsym(RTLD_DEFAULT, "SecVerifyTransformCreate"); + } + if (!SecTransformSetAttributePtr) { + SecTransformSetAttributePtr = (SecTransformSetAttributeFunc) + dlsym(RTLD_DEFAULT, "SecTransformSetAttribute"); + } + if (!SecTransformCreateReadTransformWithReadStreamPtr || + !SecTransformExecutePtr || + !SecVerifyTransformCreatePtr || + !SecTransformSetAttributePtr) { + return CryptoX_Error; + } + return CryptoX_Success; +} + +CryptoX_Result +CryptoMac_VerifyBegin(CryptoX_SignatureHandle* aInputData) +{ + if (!aInputData) { + return CryptoX_Error; + } + + void* inputData = CFDataCreateMutable(kCFAllocatorDefault, 0); + if (!inputData) { + return CryptoX_Error; + } + + *aInputData = inputData; + return CryptoX_Success; +} + +CryptoX_Result +CryptoMac_VerifyUpdate(CryptoX_SignatureHandle* aInputData, void* aBuf, + unsigned int aLen) +{ + if (aLen == 0) { + return CryptoX_Success; + } + if (!aInputData || !*aInputData) { + return CryptoX_Error; + } + + CFMutableDataRef inputData = (CFMutableDataRef)*aInputData; + + CFDataAppendBytes(inputData, (const uint8*)aBuf, aLen); + return CryptoX_Success; +} + +CryptoX_Result +CryptoMac_LoadPublicKey(const unsigned char* aCertData, + unsigned int aDataSize, + CryptoX_PublicKey* aPublicKey) +{ + if (!aCertData || aDataSize == 0 || !aPublicKey) { + return CryptoX_Error; + } + *aPublicKey = NULL; + CFDataRef certData = CFDataCreate(kCFAllocatorDefault, + aCertData, + aDataSize); + if (!certData) { + return CryptoX_Error; + } + + SecCertificateRef cert = SecCertificateCreateWithData(kCFAllocatorDefault, + certData); + CFRelease(certData); + if (!cert) { + return CryptoX_Error; + } + + OSStatus status = SecCertificateCopyPublicKey(cert, + (SecKeyRef*)aPublicKey); + CFRelease(cert); + if (status != 0) { + return CryptoX_Error; + } + + return CryptoX_Success; +} + +CryptoX_Result +CryptoMac_VerifySignature(CryptoX_SignatureHandle* aInputData, + CryptoX_PublicKey* aPublicKey, + const unsigned char* aSignature, + unsigned int aSignatureLen) +{ + if (!aInputData || !*aInputData || !aPublicKey || !*aPublicKey || + !aSignature || aSignatureLen == 0) { + return CryptoX_Error; + } + + CFDataRef signatureData = CFDataCreate(kCFAllocatorDefault, + aSignature, aSignatureLen); + if (!signatureData) { + return CryptoX_Error; + } + + CFErrorRef error; + SecTransformRef verifier = + SecVerifyTransformCreatePtr((SecKeyRef)*aPublicKey, + signatureData, + &error); + if (!verifier || error) { + CFRelease(signatureData); + return CryptoX_Error; + } + + SecTransformSetAttributePtr(verifier, + kSecTransformInputAttributeName, + (CFDataRef)*aInputData, + &error); + if (error) { + CFRelease(signatureData); + CFRelease(verifier); + return CryptoX_Error; + } + + CryptoX_Result result = CryptoX_Error; + CFTypeRef rv = SecTransformExecutePtr(verifier, &error); + if (error) { + CFRelease(signatureData); + CFRelease(verifier); + return CryptoX_Error; + } + + if (CFGetTypeID(rv) == CFBooleanGetTypeID() && + CFBooleanGetValue((CFBooleanRef)rv) == true) { + result = CryptoX_Success; + } + + CFRelease(signatureData); + CFRelease(verifier); + + return result; +} + +void +CryptoMac_FreeSignatureHandle(CryptoX_SignatureHandle* aInputData) +{ + if (!aInputData || !*aInputData) { + return; + } + + CFMutableDataRef inputData = NULL; + inputData = (CFMutableDataRef)*aInputData; + + CFRelease(inputData); +} + +void +CryptoMac_FreePublicKey(CryptoX_PublicKey* aPublicKey) +{ + if (!aPublicKey || !*aPublicKey) { + return; + } + + CFRelease((SecKeyRef)*aPublicKey); +} |