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| |
| #ifndef CRYS_RSA_PRIM_H |
| #define CRYS_RSA_PRIM_H |
| |
| #include "crys_rsa_types.h" |
| |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| /*! |
| @file |
| @brief This module defines the API that implements the [PKCS1_2.1] primitive functions. |
| @defgroup crys_rsa_prim CryptoCell RSA primitive APIs |
| @{ |
| @ingroup crys_rsa |
| |
| |
| \note Direct use of primitive functions, rather than schemes to protect data, is strongly discouraged as primitive functions are |
| susceptible to well-known attacks. |
| */ |
| |
| |
| |
| /**********************************************************************************/ |
| /*! |
| @brief Implements the RSAEP algorithm, as defined in [PKCS1_2.1] - 6.1.1. |
| |
| @return CRYS_OK on success. |
| @return A non-zero value from crys_rsa_error.h on failure. |
| */ |
| CIMPORT_C CRYSError_t CRYS_RSA_PRIM_Encrypt( |
| CRYS_RSAUserPubKey_t *UserPubKey_ptr, /*!< [in] Pointer to the public key data structure. */ |
| CRYS_RSAPrimeData_t *PrimeData_ptr, /*!< [in] Pointer to a temporary structure containing internal buffers. */ |
| uint8_t *Data_ptr, /*!< [in] Pointer to the data to encrypt. */ |
| uint16_t DataSize, /*!< [in] The size (in bytes) of input data must be ≤ modulus size. If is smaller, |
| then the function padds it by zeros on left side up to the modulus size |
| and therefore, after further decrypt operation, its result will contain |
| zero-padding also. If the function is used for recovering the plain data |
| from result of inverse function (CRYS_RSA_PRIM_Decrypt), the input size |
| must be equal to modulus size exactly. */ |
| uint8_t *Output_ptr /*!< [out] Pointer to the encrypted data. The buffer size must be ≥ the modulus size. */ |
| ); |
| |
| |
| /**********************************************************************************/ |
| /*! |
| @brief Implements the RSADP algorithm, as defined in [PKCS1_2.1] - 6.1.2. |
| |
| @return CRYS_OK on success. |
| @return A non-zero value from crys_rsa_error.h on failure. |
| |
| */ |
| CIMPORT_C CRYSError_t CRYS_RSA_PRIM_Decrypt( |
| CRYS_RSAUserPrivKey_t *UserPrivKey_ptr, /*!< [in] Pointer to the private key data structure. |
| The key representation (pair or quintuple) and hence the RSA algorithm |
| (CRT or not-CRT) is determined by enum value in the structure |
| ::CRYS_RSA_Build_PrivKey or ::CRYS_RSA_Build_PrivKeyCRT. */ |
| CRYS_RSAPrimeData_t *PrimeData_ptr, /*!< [in] Pointer to a temporary structure containing internal buffers required for |
| the RSA operation. */ |
| uint8_t *Data_ptr, /*!< [in] Pointer to the data to be decrypted. */ |
| uint16_t DataSize, /*!< [in] The size (in bytes) of input data must be ≤ modulus size. |
| If the size is smaller (not recommendet), then the data will be zero-padded |
| by the function on left side up to the modulus size and therefore, after further |
| decrypt operation,its result will contain zero-padding also. If the function is used |
| for recovering the plain data from result of inverse function (CRYS_RSA_PRIM_Encrypt), |
| the input size must be equal to modulus size exactly. */ |
| uint8_t *Output_ptr /*!< [out] Pointer to the decrypted data. The buffer size must be ≤ the modulus size. */ |
| ); |
| |
| |
| /*! |
| @brief Implements the RSASP1 algorithm, as defined in [PKCS1_2.1] - 6.2.1, as a call to ::CRYS_RSA_PRIM_Decrypt, |
| since the signature primitive is identical to the decryption primitive. |
| */ |
| #define CRYS_RSA_PRIM_Sign CRYS_RSA_PRIM_Decrypt |
| |
| /*! |
| @brief Implements the RSAVP1 algorithm, as defined in [PKCS1_2.1] - 6.2.2, as a call to ::CRYS_RSA_PRIM_Encrypt. |
| */ |
| #define CRYS_RSA_PRIM_Verify CRYS_RSA_PRIM_Encrypt |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| /** |
| @} |
| */ |
| #endif |