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Add HKDF wrapper #5480
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| /** @file | ||
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| HKDF utility | ||
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| @section license License | ||
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| Licensed to the Apache Software Foundation (ASF) under one | ||
| or more contributor license agreements. See the NOTICE file | ||
| distributed with this work for additional information | ||
| regarding copyright ownership. The ASF licenses this file | ||
| to you under the Apache License, Version 2.0 (the | ||
| "License"); you may not use this file except in compliance | ||
| with the License. You may obtain a copy of the License at | ||
|
|
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| http://www.apache.org/licenses/LICENSE-2.0 | ||
|
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| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
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| #pragma once | ||
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| #ifdef OPENSSL_IS_BORINGSSL | ||
| #include <openssl/digest.h> | ||
| #include <openssl/cipher.h> | ||
| #else | ||
| #include <openssl/evp.h> | ||
| #endif | ||
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| class HKDF | ||
| { | ||
| public: | ||
| HKDF(const EVP_MD *digest); | ||
| ~HKDF(); | ||
| int extract(uint8_t *dst, size_t *dst_len, const uint8_t *salt, size_t salt_len, const uint8_t *ikm, size_t ikm_len); | ||
| int expand(uint8_t *dst, size_t *dst_len, const uint8_t *prk, size_t prk_len, const uint8_t *info, size_t info_len, | ||
| uint16_t length); | ||
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| protected: | ||
| const EVP_MD *_digest = nullptr; | ||
| EVP_PKEY_CTX *_pctx = nullptr; | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| /** @file | ||
| * | ||
| * HKDF utility (BoringSSL version) | ||
| * | ||
| * @section license License | ||
| * | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| #include "tscore/HKDF.h" | ||
| #include <openssl/hkdf.h> | ||
|
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| HKDF::HKDF(const EVP_MD *digest) : _digest(digest) {} | ||
| HKDF::~HKDF() {} | ||
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| int | ||
| HKDF::extract(uint8_t *dst, size_t *dst_len, const uint8_t *salt, size_t salt_len, const uint8_t *ikm, size_t ikm_len) | ||
| { | ||
| return HKDF_extract(dst, dst_len, this->_digest, ikm, ikm_len, salt, salt_len); | ||
| } | ||
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| int | ||
| HKDF::expand(uint8_t *dst, size_t *dst_len, const uint8_t *prk, size_t prk_len, const uint8_t *info, size_t info_len, | ||
| uint16_t length) | ||
| { | ||
| *dst_len = length; | ||
| return HKDF_expand(dst, length, this->_digest, prk, prk_len, info, info_len); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| /** @file | ||
| * | ||
| * HKDF utility (OpenSSL version) | ||
| * | ||
| * @section license License | ||
| * | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| #include "tscore/HKDF.h" | ||
| #include <openssl/kdf.h> | ||
|
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| HKDF::HKDF(const EVP_MD *digest) : _digest(digest) | ||
| { | ||
| // XXX We cannot reuse pctx now due to a bug in OpenSSL | ||
| // this->_pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, nullptr); | ||
| } | ||
|
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| HKDF::~HKDF() | ||
| { | ||
| EVP_PKEY_CTX_free(this->_pctx); | ||
| this->_pctx = nullptr; | ||
| } | ||
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| int | ||
| HKDF::extract(uint8_t *dst, size_t *dst_len, const uint8_t *salt, size_t salt_len, const uint8_t *ikm, size_t ikm_len) | ||
| { | ||
| // XXX See comments in the constructor | ||
| if (this->_pctx) { | ||
| EVP_PKEY_CTX_free(this->_pctx); | ||
| this->_pctx = nullptr; | ||
| } | ||
| this->_pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, nullptr); | ||
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| if (EVP_PKEY_derive_init(this->_pctx) != 1) { | ||
| return -1; | ||
| } | ||
| if (EVP_PKEY_CTX_hkdf_mode(this->_pctx, EVP_PKEY_HKDEF_MODE_EXTRACT_ONLY) != 1) { | ||
| return -2; | ||
| } | ||
| if (EVP_PKEY_CTX_set_hkdf_md(this->_pctx, this->_digest) != 1) { | ||
| return -3; | ||
| } | ||
| if (EVP_PKEY_CTX_set1_hkdf_salt(this->_pctx, salt, salt_len) != 1) { | ||
| return -4; | ||
| } | ||
| if (EVP_PKEY_CTX_set1_hkdf_key(this->_pctx, ikm, ikm_len) != 1) { | ||
| return -5; | ||
| } | ||
| if (EVP_PKEY_derive(this->_pctx, dst, dst_len) != 1) { | ||
| return -6; | ||
| } | ||
|
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| return 1; | ||
| } | ||
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| int | ||
| HKDF::expand(uint8_t *dst, size_t *dst_len, const uint8_t *prk, size_t prk_len, const uint8_t *info, size_t info_len, | ||
| uint16_t length) | ||
| { | ||
| // XXX See comments in the constructor | ||
| if (this->_pctx) { | ||
| EVP_PKEY_CTX_free(this->_pctx); | ||
| this->_pctx = nullptr; | ||
| } | ||
| this->_pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, nullptr); | ||
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| if (EVP_PKEY_derive_init(this->_pctx) != 1) { | ||
| return -1; | ||
| } | ||
| if (EVP_PKEY_CTX_hkdf_mode(this->_pctx, EVP_PKEY_HKDEF_MODE_EXPAND_ONLY) != 1) { | ||
| return -2; | ||
| } | ||
| if (EVP_PKEY_CTX_set_hkdf_md(this->_pctx, this->_digest) != 1) { | ||
| return -3; | ||
| } | ||
| if (EVP_PKEY_CTX_set1_hkdf_key(this->_pctx, prk, prk_len) != 1) { | ||
| return -5; | ||
| } | ||
| if (EVP_PKEY_CTX_add1_hkdf_info(this->_pctx, info, info_len) != 1) { | ||
| return -6; | ||
| } | ||
| *dst_len = length; | ||
| if (EVP_PKEY_derive(this->_pctx, dst, dst_len) != 1) { | ||
| return -7; | ||
| } | ||
|
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| return 1; | ||
| } | ||
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