1 /** @file 2 Runtime Cryptographic Driver Implementation, which produce one crypto 3 protocol. 4 5 Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR> 6 This program and the accompanying materials 7 are licensed and made available under the terms and conditions of the BSD License 8 which accompanies this distribution. The full text of the license may be found at 9 http://opensource.org/licenses/bsd-license.php 10 11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 13 14 **/ 15 16 #include "CryptRuntime.h" 17 18 // 19 // The handle onto which the Runtime Crypt Protocol instance is installed 20 // 21 EFI_HANDLE mRuntimeCryptHandle = NULL; 22 23 // 24 // The Runtime Crypt Protocol instance produced by this driver 25 // 26 EFI_RUNTIME_CRYPT_PROTOCOL mRuntimeCryptProtocol = { 27 RuntimeCryptSha256GetContextSize, 28 RuntimeCryptSha256Init, 29 RuntimeCryptSha256Update, 30 RuntimeCryptSha256Final, 31 RuntimeCryptRsaNew, 32 RuntimeCryptRsaFree, 33 RuntimeCryptRsaSetKey, 34 RuntimeCryptRsaPkcs1Verify 35 }; 36 37 /** 38 Retrieves the size, in bytes, of the context buffer required for SHA-256 operations. 39 40 @return The size, in bytes, of the context buffer required for SHA-256 operations. 41 42 **/ 43 UINTN 44 EFIAPI 45 RuntimeCryptSha256GetContextSize ( 46 VOID 47 ) 48 { 49 return Sha256GetContextSize (); 50 } 51 52 /** 53 Initializes user-supplied memory pointed by Sha256Context as SHA-256 hash context for 54 subsequent use. 55 56 If Sha256Context is NULL, then return FALSE. 57 58 @param[in, out] Sha256Context Pointer to SHA-256 Context being initialized. 59 60 @retval TRUE SHA-256 context initialization succeeded. 61 @retval FALSE SHA-256 context initialization failed. 62 63 **/ 64 BOOLEAN 65 EFIAPI 66 RuntimeCryptSha256Init ( 67 IN OUT VOID *Sha256Context 68 ) 69 { 70 return Sha256Init (Sha256Context); 71 } 72 73 /** 74 Performs SHA-256 digest on a data buffer of the specified length. This function can 75 be called multiple times to compute the digest of long or discontinuous data streams. 76 77 If Sha256Context is NULL, then return FALSE. 78 79 @param[in, out] Sha256Context Pointer to the SHA-256 context. 80 @param[in] Data Pointer to the buffer containing the data to be hashed. 81 @param[in] DataLength Length of Data buffer in bytes. 82 83 @retval TRUE SHA-256 data digest succeeded. 84 @retval FALSE Invalid SHA-256 context. After Sha256Final function has been called, the 85 SHA-256 context cannot be reused. 86 87 **/ 88 BOOLEAN 89 EFIAPI 90 RuntimeCryptSha256Update ( 91 IN OUT VOID *Sha256Context, 92 IN CONST VOID *Data, 93 IN UINTN DataLength 94 ) 95 { 96 return Sha256Update (Sha256Context, Data, DataLength); 97 } 98 99 /** 100 Completes SHA-256 hash computation and retrieves the digest value into the specified 101 memory. After this function has been called, the SHA-256 context cannot be used again. 102 103 If Sha256Context is NULL, then return FALSE. 104 If HashValue is NULL, then return FALSE. 105 106 @param[in, out] Sha256Context Pointer to SHA-256 context 107 @param[out] HashValue Pointer to a buffer that receives the SHA-256 digest 108 value (32 bytes). 109 110 @retval TRUE SHA-256 digest computation succeeded. 111 @retval FALSE SHA-256 digest computation failed. 112 113 **/ 114 BOOLEAN 115 EFIAPI 116 RuntimeCryptSha256Final ( 117 IN OUT VOID *Sha256Context, 118 OUT UINT8 *HashValue 119 ) 120 { 121 return Sha256Final (Sha256Context, HashValue); 122 } 123 124 /** 125 Allocates and Initializes one RSA Context for subsequent use. 126 127 @return Pointer to the RSA Context that has been initialized. 128 If the allocations fails, RsaNew() returns NULL. 129 130 **/ 131 VOID * 132 EFIAPI 133 RuntimeCryptRsaNew ( 134 VOID 135 ) 136 { 137 return RsaNew (); 138 } 139 140 /** 141 Release the specified RSA Context. 142 143 @param[in] RsaContext Pointer to the RSA context to be released. 144 145 **/ 146 VOID 147 EFIAPI 148 RuntimeCryptRsaFree ( 149 IN VOID *RsaContext 150 ) 151 { 152 RsaFree (RsaContext); 153 } 154 155 /** 156 Sets the tag-designated RSA key component into the established RSA context from 157 the user-specified nonnegative integer (octet string format represented in RSA 158 PKCS#1). 159 160 If RsaContext is NULL, then return FALSE. 161 162 @param[in, out] RsaContext Pointer to RSA context being set. 163 @param[in] KeyTag Tag of RSA key component being set. 164 @param[in] BigNumber Pointer to octet integer buffer. 165 @param[in] BnLength Length of big number buffer in bytes. 166 167 @return TRUE RSA key component was set successfully. 168 @return FALSE Invalid RSA key component tag. 169 170 **/ 171 BOOLEAN 172 EFIAPI 173 RuntimeCryptRsaSetKey ( 174 IN OUT VOID *RsaContext, 175 IN RSA_KEY_TAG KeyTag, 176 IN CONST UINT8 *BigNumber, 177 IN UINTN BnLength 178 ) 179 { 180 return RsaSetKey (RsaContext, KeyTag, BigNumber, BnLength); 181 } 182 183 /** 184 Verifies the RSA-SSA signature with EMSA-PKCS1-v1_5 encoding scheme defined in 185 RSA PKCS#1. 186 187 If RsaContext is NULL, then return FALSE. 188 If MessageHash is NULL, then return FALSE. 189 If Signature is NULL, then return FALSE. 190 If HashLength is not equal to the size of MD5, SHA-1 or SHA-256 digest, return FALSE. 191 192 @param[in] RsaContext Pointer to RSA context for signature verification. 193 @param[in] MessageHash Pointer to octet message hash to be checked. 194 @param[in] HashLength Length of the message hash in bytes. 195 @param[in] Signature Pointer to RSA PKCS1-v1_5 signature to be verified. 196 @param[in] SigLength Length of signature in bytes. 197 198 @return TRUE Valid signature encoded in PKCS1-v1_5. 199 @return FALSE Invalid signature or invalid RSA context. 200 201 **/ 202 BOOLEAN 203 EFIAPI 204 RuntimeCryptRsaPkcs1Verify ( 205 IN VOID *RsaContext, 206 IN CONST UINT8 *MessageHash, 207 IN UINTN HashLength, 208 IN CONST UINT8 *Signature, 209 IN UINTN SigLength 210 ) 211 { 212 return RsaPkcs1Verify (RsaContext, MessageHash, HashLength, Signature, SigLength); 213 } 214 215 /** 216 Entry Point for Runtime Cryptographic Driver. 217 218 This function installs Runtime Crypt Protocol. 219 220 @param ImageHandle Image handle of this driver. 221 @param SystemTable a Pointer to the EFI System Table. 222 223 @retval EFI_SUCEESS Runtime Crypt Protocol is successfully installed 224 @return Others Some error occurs when installing Runtime Crypt Protocol. 225 226 **/ 227 EFI_STATUS 228 EFIAPI 229 CryptRuntimeDriverInitialize ( 230 IN EFI_HANDLE ImageHandle, 231 IN EFI_SYSTEM_TABLE *SystemTable 232 ) 233 { 234 EFI_STATUS Status; 235 236 // 237 // Install the Runtime Crypt Protocol onto a new handle 238 // 239 Status = gBS->InstallMultipleProtocolInterfaces ( 240 &mRuntimeCryptHandle, 241 &gEfiRuntimeCryptProtocolGuid, 242 &mRuntimeCryptProtocol, 243 NULL 244 ); 245 ASSERT_EFI_ERROR (Status); 246 247 return Status; 248 } 249
