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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include <openssl/evp.h> | 5 #include <openssl/evp.h> |
| 6 #include <openssl/mem.h> |
| 7 #include <openssl/rsa.h> |
| 6 #include <stddef.h> | 8 #include <stddef.h> |
| 7 #include <stdint.h> | 9 #include <stdint.h> |
| 8 #include <string.h> | 10 #include <string.h> |
| 9 | 11 |
| 10 #include "base/memory/ptr_util.h" | 12 #include "base/memory/ptr_util.h" |
| 11 #include "components/webcrypto/algorithms/rsa.h" | 13 #include "components/webcrypto/algorithms/rsa.h" |
| 12 #include "components/webcrypto/algorithms/util.h" | 14 #include "components/webcrypto/algorithms/util.h" |
| 13 #include "components/webcrypto/blink_key_handle.h" | 15 #include "components/webcrypto/blink_key_handle.h" |
| 14 #include "components/webcrypto/crypto_data.h" | 16 #include "components/webcrypto/crypto_data.h" |
| 15 #include "components/webcrypto/status.h" | 17 #include "components/webcrypto/status.h" |
| 16 #include "crypto/openssl_util.h" | 18 #include "crypto/openssl_util.h" |
| 17 #include "crypto/scoped_openssl_types.h" | |
| 18 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h" | 19 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h" |
| 19 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h" | 20 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h" |
| 20 | 21 |
| 21 namespace webcrypto { | 22 namespace webcrypto { |
| 22 | 23 |
| 23 namespace { | 24 namespace { |
| 24 | 25 |
| 25 typedef int (*InitFunc)(EVP_PKEY_CTX* ctx); | 26 typedef int (*InitFunc)(EVP_PKEY_CTX* ctx); |
| 26 typedef int (*EncryptDecryptFunc)(EVP_PKEY_CTX* ctx, | 27 typedef int (*EncryptDecryptFunc)(EVP_PKEY_CTX* ctx, |
| 27 unsigned char* out, | 28 unsigned char* out, |
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| 42 const blink::WebCryptoKey& key, | 43 const blink::WebCryptoKey& key, |
| 43 const CryptoData& data, | 44 const CryptoData& data, |
| 44 std::vector<uint8_t>* buffer) { | 45 std::vector<uint8_t>* buffer) { |
| 45 crypto::OpenSSLErrStackTracer err_tracer(FROM_HERE); | 46 crypto::OpenSSLErrStackTracer err_tracer(FROM_HERE); |
| 46 | 47 |
| 47 EVP_PKEY* pkey = GetEVP_PKEY(key); | 48 EVP_PKEY* pkey = GetEVP_PKEY(key); |
| 48 const EVP_MD* digest = GetDigest(key.algorithm().rsaHashedParams()->hash()); | 49 const EVP_MD* digest = GetDigest(key.algorithm().rsaHashedParams()->hash()); |
| 49 if (!digest) | 50 if (!digest) |
| 50 return Status::ErrorUnsupported(); | 51 return Status::ErrorUnsupported(); |
| 51 | 52 |
| 52 crypto::ScopedEVP_PKEY_CTX ctx(EVP_PKEY_CTX_new(pkey, NULL)); | 53 bssl::UniquePtr<EVP_PKEY_CTX> ctx(EVP_PKEY_CTX_new(pkey, NULL)); |
| 53 | 54 |
| 54 if (!init_func(ctx.get()) || | 55 if (!init_func(ctx.get()) || |
| 55 !EVP_PKEY_CTX_set_rsa_padding(ctx.get(), RSA_PKCS1_OAEP_PADDING) || | 56 !EVP_PKEY_CTX_set_rsa_padding(ctx.get(), RSA_PKCS1_OAEP_PADDING) || |
| 56 !EVP_PKEY_CTX_set_rsa_oaep_md(ctx.get(), digest) || | 57 !EVP_PKEY_CTX_set_rsa_oaep_md(ctx.get(), digest) || |
| 57 !EVP_PKEY_CTX_set_rsa_mgf1_md(ctx.get(), digest)) { | 58 !EVP_PKEY_CTX_set_rsa_mgf1_md(ctx.get(), digest)) { |
| 58 return Status::OperationError(); | 59 return Status::OperationError(); |
| 59 } | 60 } |
| 60 | 61 |
| 61 const blink::WebVector<uint8_t>& label = | 62 const blink::WebVector<uint8_t>& label = |
| 62 algorithm.rsaOaepParams()->optionalLabel(); | 63 algorithm.rsaOaepParams()->optionalLabel(); |
| 63 | 64 |
| 64 if (label.size()) { | 65 if (label.size()) { |
| 65 // Make a copy of the label, since the ctx takes ownership of it when | 66 // Make a copy of the label, since the ctx takes ownership of it when |
| 66 // calling set0_rsa_oaep_label(). | 67 // calling set0_rsa_oaep_label(). |
| 67 crypto::ScopedOpenSSLBytes label_copy; | 68 bssl::UniquePtr<uint8_t> label_copy; |
| 68 label_copy.reset(static_cast<uint8_t*>(OPENSSL_malloc(label.size()))); | 69 label_copy.reset(static_cast<uint8_t*>(OPENSSL_malloc(label.size()))); |
| 69 memcpy(label_copy.get(), label.data(), label.size()); | 70 memcpy(label_copy.get(), label.data(), label.size()); |
| 70 | 71 |
| 71 if (1 != EVP_PKEY_CTX_set0_rsa_oaep_label(ctx.get(), label_copy.release(), | 72 if (1 != EVP_PKEY_CTX_set0_rsa_oaep_label(ctx.get(), label_copy.release(), |
| 72 label.size())) { | 73 label.size())) { |
| 73 return Status::OperationError(); | 74 return Status::OperationError(); |
| 74 } | 75 } |
| 75 } | 76 } |
| 76 | 77 |
| 77 // Determine the maximum length of the output. | 78 // Determine the maximum length of the output. |
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| 139 } | 140 } |
| 140 }; | 141 }; |
| 141 | 142 |
| 142 } // namespace | 143 } // namespace |
| 143 | 144 |
| 144 std::unique_ptr<AlgorithmImplementation> CreateRsaOaepImplementation() { | 145 std::unique_ptr<AlgorithmImplementation> CreateRsaOaepImplementation() { |
| 145 return base::WrapUnique(new RsaOaepImplementation); | 146 return base::WrapUnique(new RsaOaepImplementation); |
| 146 } | 147 } |
| 147 | 148 |
| 148 } // namespace webcrypto | 149 } // namespace webcrypto |
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