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      1 // This file was extracted from the TCG Published
      2 // Trusted Platform Module Library
      3 // Part 4: Supporting Routines
      4 // Family "2.0"
      5 // Level 00 Revision 01.16
      6 // October 30, 2014
      7 
      8 #ifndef _OSSL_CRYPTO_ENGINE_H
      9 #define _OSSL_CRYPTO_ENGINE_H
     10 #include <openssl/aes.h>
     11 #include <openssl/evp.h>
     12 #include <openssl/sha.h>
     13 #include <openssl/ec.h>
     14 #include <openssl/rand.h>
     15 #include <openssl/bn.h>
     16 #define     CRYPTO_ENGINE
     17 #include "CryptoEngine.h"
     18 #include "CpriMisc_fp.h"
     19 #define MAX_ECC_PARAMETER_BYTES 32
     20 #define MAX_2B_BYTES MAX((MAX_RSA_KEY_BYTES * ALG_RSA),                              \
     21                          MAX((MAX_ECC_PARAMETER_BYTES * ALG_ECC),                   \
     22                              MAX_DIGEST_SIZE))
     23 #define assert2Bsize(a) pAssert((a).size <= sizeof((a).buffer))
     24 #ifdef TPM_ALG_RSA
     25 #   ifdef   RSA_KEY_SIEVE
     26 #       include     "RsaKeySieve.h"
     27 #       include     "RsaKeySieve_fp.h"
     28 #   endif
     29 #   include    "CpriRSA_fp.h"
     30 #endif
     31 
     32 #ifdef OPENSSL_IS_BORINGSSL
     33 // libtpm2 reads internal EVP_MD state (e.g. ctx_size). The boringssl headers
     34 // don't expose this type so define it here.
     35 struct env_md_st {
     36   /* type contains a NID identifing the digest function. (For example,
     37    * NID_md5.) */
     38   int type;
     39 
     40   /* md_size contains the size, in bytes, of the resulting digest. */
     41   unsigned md_size;
     42 
     43   /* flags contains the OR of |EVP_MD_FLAG_*| values. */
     44   uint32_t flags;
     45 
     46   /* init initialises the state in |ctx->md_data|. */
     47   void (*init)(EVP_MD_CTX *ctx);
     48 
     49   /* update hashes |len| bytes of |data| into the state in |ctx->md_data|. */
     50   void (*update)(EVP_MD_CTX *ctx, const void *data, size_t count);
     51 
     52   /* final completes the hash and writes |md_size| bytes of digest to |out|. */
     53   void (*final)(EVP_MD_CTX *ctx, uint8_t *out);
     54 
     55   /* block_size contains the hash's native block size. */
     56   unsigned block_size;
     57 
     58   /* ctx_size contains the size, in bytes, of the state of the hash function. */
     59   unsigned ctx_size;
     60 };
     61 #endif
     62 
     63 //
     64 //     This is a structure to hold the parameters for the version of KDFa() used by the CryptoEngine(). This
     65 //     structure allows the state to be passed between multiple functions that use the same pseudo-random
     66 //     sequence.
     67 //
     68 typedef struct {
     69    CPRI_HASH_STATE          iPadCtx;
     70    CPRI_HASH_STATE          oPadCtx;
     71    TPM2B                   *extra;
     72    UINT32                  *outer;
     73    TPM_ALG_ID               hashAlg;
     74    UINT16                   keySizeInBits;
     75 } KDFa_CONTEXT;
     76 #endif // _OSSL_CRYPTO_ENGINE_H
     77