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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "net/quic/crypto/chacha20_poly1305_decrypter.h" | |
| 6 | |
| 7 #include <pk11pub.h> | |
| 8 | |
| 9 #include "base/logging.h" | |
| 10 | |
| 11 using base::StringPiece; | |
| 12 | |
| 13 namespace net { | |
| 14 | |
| 15 namespace { | |
| 16 | |
| 17 const size_t kKeySize = 32; | |
| 18 const size_t kNoncePrefixSize = 0; | |
| 19 | |
| 20 } // namespace | |
| 21 | |
| 22 #if defined(USE_NSS) | |
| 23 | |
| 24 // System NSS doesn't support ChaCha20+Poly1305 yet. | |
| 25 | |
| 26 ChaCha20Poly1305Decrypter::ChaCha20Poly1305Decrypter() | |
| 27 : AeadBaseDecrypter(CKM_INVALID_MECHANISM, nullptr, kKeySize, | |
| 28 kAuthTagSize, kNoncePrefixSize) { | |
| 29 NOTIMPLEMENTED(); | |
| 30 } | |
| 31 | |
| 32 ChaCha20Poly1305Decrypter::~ChaCha20Poly1305Decrypter() {} | |
| 33 | |
| 34 // static | |
| 35 bool ChaCha20Poly1305Decrypter::IsSupported() { | |
| 36 return false; | |
| 37 } | |
| 38 | |
| 39 void ChaCha20Poly1305Decrypter::FillAeadParams( | |
| 40 StringPiece nonce, | |
| 41 const StringPiece& associated_data, | |
| 42 size_t auth_tag_size, | |
| 43 AeadParams* aead_params) const { | |
| 44 NOTIMPLEMENTED(); | |
| 45 } | |
| 46 | |
| 47 #else // defined(USE_NSS) | |
| 48 | |
| 49 ChaCha20Poly1305Decrypter::ChaCha20Poly1305Decrypter() | |
| 50 : AeadBaseDecrypter(CKM_NSS_CHACHA20_POLY1305, PK11_Decrypt, kKeySize, | |
| 51 kAuthTagSize, kNoncePrefixSize) { | |
| 52 static_assert(kKeySize <= kMaxKeySize, "key size too big"); | |
| 53 static_assert(kNoncePrefixSize <= kMaxNoncePrefixSize, | |
| 54 "nonce prefix size too big"); | |
| 55 } | |
| 56 | |
| 57 ChaCha20Poly1305Decrypter::~ChaCha20Poly1305Decrypter() {} | |
| 58 | |
| 59 // static | |
| 60 bool ChaCha20Poly1305Decrypter::IsSupported() { | |
| 61 return true; | |
| 62 } | |
| 63 | |
| 64 void ChaCha20Poly1305Decrypter::FillAeadParams( | |
| 65 StringPiece nonce, | |
| 66 const StringPiece& associated_data, | |
| 67 size_t auth_tag_size, | |
| 68 AeadParams* aead_params) const { | |
| 69 aead_params->len = sizeof(aead_params->data.nss_aead_params); | |
| 70 CK_NSS_AEAD_PARAMS* nss_aead_params = &aead_params->data.nss_aead_params; | |
| 71 nss_aead_params->pIv = | |
| 72 reinterpret_cast<CK_BYTE*>(const_cast<char*>(nonce.data())); | |
| 73 nss_aead_params->ulIvLen = nonce.size(); | |
| 74 nss_aead_params->pAAD = | |
| 75 reinterpret_cast<CK_BYTE*>(const_cast<char*>(associated_data.data())); | |
| 76 nss_aead_params->ulAADLen = associated_data.size(); | |
| 77 nss_aead_params->ulTagLen = auth_tag_size; | |
| 78 } | |
| 79 | |
| 80 #endif // defined(USE_NSS) | |
| 81 | |
| 82 } // namespace net | |
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Chromium Code Reviews
Issue 992733002:
Remove //net (except for Android test stuff) and sdch (Closed)
Base URL: git@github.com:domokit/mojo.git@master