a11741f98d
See https://developers.google.com/widevine/drm/client/opk for documentation and an integration guide.
46 lines
2.0 KiB
C
46 lines
2.0 KiB
C
/* Copyright 2019 Google LLC. All Rights Reserved. This file and proprietary
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source code may only be used and distributed under the Widevine
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License Agreement. */
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#ifndef OEMCRYPTO_TA_RSA_UTIL_H_
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#define OEMCRYPTO_TA_RSA_UTIL_H_
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#include <stdbool.h>
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#include <stdint.h>
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#include "openssl/rsa.h"
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/* Logs any errors reported to the thread's error queue. */
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void dump_ssl_error(void);
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/* Checks to see that |rsa| is a valid RSA key. Returns false if |rsa| is not a
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valid key.
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Caller retains ownership of *|rsa| and it must not be NULL. */
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bool CheckRSAKey(const RSA* rsa);
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/* Attempts to deserialize |size| bytes of |serialized_bytes| into an RSA key
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and store the result in |rsa|. |serialized_bytes| is expected to be a PKCS8
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RSA private key. Returns false if |serialized_bytes| can not be deserialized.
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|size| must be > 0.
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Caller retains ownership of all pointers and they must not be NULL. */
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bool DeserializePKCS8PrivateKey(const uint8_t* serialized_bytes, size_t size,
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RSA** rsa);
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/* Signs |message_length| bytes of |message| using |rsa| and padding scheme
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RSASSA-PSS with SHA1 and places the result in |signature| and modifies
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*|signature_length| to the appropriate value.
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Returns false if the signature could not be computed.
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|message_length| must be > 0 and *|signature_length| must be > RSA_size(rsa).
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Caller retains ownership of all pointers and they must not be NULL. */
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bool RSASignSSAPSSSHA1(RSA* rsa, const uint8_t* message, size_t message_length,
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uint8_t* signature, size_t* signature_length);
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/* Decrypts |in_length| bytes of |in| and places it in |out| using scheme PKCS1
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OAEP and |rsa|. Modifies *|out_length| to the appropriate length.
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|in_length| must be > 0 and *|out_length| must be > RSA_size(rsa).
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Caller retains ownership of all pointers and they must not be NULL. */
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bool RSAPrivateDecrypt(RSA* rsa, const uint8_t* in, size_t in_length,
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uint8_t* out, size_t* out_length);
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#endif /* OEMCRYPTO_TA_RSA_UTIL_H_ */
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