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CryptoCell SRP APIs
Data Structures | Modules | Typedefs | Enumerations | Functions

CryptoCell SRP APIs

Data Structures

struct  CRYS_SRP_GroupParam_t
struct  CRYS_SRP_Context_t

Modules

 CryptoCell SRP specific errors

Typedefs

typedef uint8_t CRYS_SRP_Modulus_t [CRYS_SRP_MAX_MODULUS]
typedef uint8_t CRYS_SRP_Digest_t [CRYS_SRP_MAX_DIGEST]
typedef uint8_t CRYS_SRP_Secret_t [2 *CRYS_SRP_MAX_DIGEST]
typedef struct
CRYS_SRP_GroupParam_t 		CRYS_SRP_GroupParam_t
typedef struct CRYS_SRP_Context_t CRYS_SRP_Context_t

Enumerations

enum  CRYS_SRP_Version_t {
  CRYS_SRP_VER_3 = 0, CRYS_SRP_VER_6 = 1, CRYS_SRP_VER_6A = 2, CRYS_SRP_VER_HK = 3,
  CRYS_SRP_NumOfVersions, CRYS_SRP_VersionLast = 0x7FFFFFFF
}
enum  CRYS_SRP_Entity_t { CRYS_SRP_HOST = 1, CRYS_SRP_USER = 2, CRYS_SRP_NumOfEntityType, CRYS_SRP_EntityLast = 0x7FFFFFFF }

Functions

CIMPORT_C CRYSError_t CRYS_SRP_Init (CRYS_SRP_Entity_t srpType, CRYS_SRP_Version_t srpVer, CRYS_SRP_Modulus_t srpModulus, uint8_t srpGen, size_t modSizeInBits, CRYS_HASH_OperationMode_t hashMode, uint8_t *pUserName, size_t userNameSize, uint8_t *pPwd, size_t pwdSize, void *pRndState, SaSiRndGenerateVectWorkFunc_t rndGenerateVectFunc, CRYS_SRP_Context_t *pCtx)
 This function initiates the SRP context.
CIMPORT_C CRYSError_t CRYS_SRP_PwdVerCreate (size_t saltSize, uint8_t *pSalt, CRYS_SRP_Modulus_t pwdVerifier, CRYS_SRP_Context_t *pCtx)
 This function calculates pSalt & password verifier.
CIMPORT_C CRYSError_t CRYS_SRP_Clear (CRYS_SRP_Context_t *pCtx)
 Clears the SRP context.
CIMPORT_C CRYSError_t CRYS_SRP_HostPubKeyCreate (size_t ephemPrivSize, CRYS_SRP_Modulus_t pwdVerifier, CRYS_SRP_Modulus_t hostPubKeyB, CRYS_SRP_Context_t *pCtx)
 This function generates host public & private ephemeral key, known as B & b in RFC.
CIMPORT_C CRYSError_t CRYS_SRP_HostProofVerifyAndCalc (size_t saltSize, uint8_t *pSalt, CRYS_SRP_Modulus_t pwdVerifier, CRYS_SRP_Modulus_t userPubKeyA, CRYS_SRP_Modulus_t hostPubKeyB, CRYS_SRP_Digest_t userProof, CRYS_SRP_Digest_t hostProof, CRYS_SRP_Secret_t sharedSecret, CRYS_SRP_Context_t *pCtx)
 Verifies the user Proof and calculates the Host message proof.
CIMPORT_C CRYSError_t CRYS_SRP_UserPubKeyCreate (size_t ephemPrivSize, CRYS_SRP_Modulus_t userPubKeyA, CRYS_SRP_Context_t *pCtx)
 This function generates user public & private ephemeral key, known as A & a in RFC.
CIMPORT_C CRYSError_t CRYS_SRP_UserProofCalc (size_t saltSize, uint8_t *pSalt, CRYS_SRP_Modulus_t userPubKeyA, CRYS_SRP_Modulus_t hostPubKeyB, CRYS_SRP_Digest_t userProof, CRYS_SRP_Secret_t sharedSecret, CRYS_SRP_Context_t *pCtx)
 This function calculates the user proof.
CIMPORT_C CRYSError_t CRYS_SRP_UserProofVerify (CRYS_SRP_Secret_t sharedSecret, CRYS_SRP_Modulus_t userPubKeyA, CRYS_SRP_Digest_t userProof, CRYS_SRP_Digest_t hostProof, CRYS_SRP_Context_t *pCtx)
 This function verifies the host proof.

Typedef Documentation

typedef struct CRYS_SRP_Context_t CRYS_SRP_Context_t

The SRP context prototype

typedef uint8_t CRYS_SRP_Digest_t[CRYS_SRP_MAX_DIGEST]

SRP digest buffer definition.

Definition at line 133 of file crys_srp.h.

typedef struct CRYS_SRP_GroupParam_t CRYS_SRP_GroupParam_t

Group parameters for the SRP - defines the modulus and the generator used

typedef uint8_t CRYS_SRP_Modulus_t[CRYS_SRP_MAX_MODULUS]

SRP modulus buffer definition.

Definition at line 130 of file crys_srp.h.

typedef uint8_t CRYS_SRP_Secret_t[2 *CRYS_SRP_MAX_DIGEST]

SRP secret buffer definition.

Definition at line 136 of file crys_srp.h.

Enumeration Type Documentation

enum CRYS_SRP_Entity_t

SRP entity type

Enumerator:
CRYS_SRP_HOST 

Host entity, called also server, verifier, or Accessory in Home-Kit

CRYS_SRP_USER 

User entity, called also client, or Device in Home-Kit

CRYS_SRP_NumOfEntityType 

Maximal number of entities types.

CRYS_SRP_EntityLast 

Reserved.

Definition at line 158 of file crys_srp.h.

enum CRYS_SRP_Version_t

SRP supported versions

Enumerator:
CRYS_SRP_VER_3 

VER 3.

CRYS_SRP_VER_6 

VER 6.

CRYS_SRP_VER_6A 

VER 6A.

CRYS_SRP_VER_HK 

VER 6A.

CRYS_SRP_NumOfVersions 

Maximal number of supported versions.

CRYS_SRP_VersionLast 

Reserved.

Definition at line 143 of file crys_srp.h.

Function Documentation

CIMPORT_C CRYSError_t CRYS_SRP_Clear ( CRYS_SRP_Context_t *  pCtx )

Clears the SRP context.

Returns:
CRYS_OK on success.
A non-zero value on failure as defined crys_srp_error.h.
Parameters:
[in,out]pCtxA Pointer to the SRP context.
CIMPORT_C CRYSError_t CRYS_SRP_HostProofVerifyAndCalc ( size_t  saltSize,
uint8_t *  pSalt,
CRYS_SRP_Modulus_t  pwdVerifier,
CRYS_SRP_Modulus_t  userPubKeyA,
CRYS_SRP_Modulus_t  hostPubKeyB,
CRYS_SRP_Digest_t  userProof,
CRYS_SRP_Digest_t  hostProof,
CRYS_SRP_Secret_t  sharedSecret,
CRYS_SRP_Context_t *  pCtx 
)

Verifies the user Proof and calculates the Host message proof.

Returns:
CRYS_OK on success.
A non-zero value on failure as defined crys_srp_error.h or crys_hash_error.h.
Parameters:
[in]saltSizeThe size of the random salt, The range is between CRYS_SRP_MIN_SALT_SIZE to CRYS_SRP_MAX_SALT_SIZE.
[in]pSaltA Pointer to the pSalt number.
[in]pwdVerifierA Pointer to the password verifier (v).
[in]userPubKeyAA Pointer to the user ephemeral public key (A).
[in]hostPubKeyBA Pointer to the host ephemeral public key (B).
[in]userProofA Pointer to the SRP user proof buffer (M1).
[out]hostProofA Pointer to the SRP host proof buffer (M2).
[out]sharedSecretA Pointer to the SRP shared secret (K).
[in]pCtxA Pointer to the SRP context.
CIMPORT_C CRYSError_t CRYS_SRP_HostPubKeyCreate ( size_t  ephemPrivSize,
CRYS_SRP_Modulus_t  pwdVerifier,
CRYS_SRP_Modulus_t  hostPubKeyB,
CRYS_SRP_Context_t *  pCtx 
)

This function generates host public & private ephemeral key, known as B & b in RFC.

Returns:
CRYS_OK on success.
A non-zero value on failure as defined crys_srp_error.h or crys_rnd_error.h.
Parameters:
[in]ephemPrivSizeThe size of the generated ephemeral private key (b). The range is between CRYS_SRP_PRIV_NUM_MIN_SIZE to CRYS_SRP_PRIV_NUM_MAX_SIZE
[in]pwdVerifierA Pointer to the verifier (v).
[out]hostPubKeyBA Pointer to the host ephemeral public key (B).
[in,out]pCtxA Pointer to the SRP context.
CIMPORT_C CRYSError_t CRYS_SRP_Init ( CRYS_SRP_Entity_t  srpType,
CRYS_SRP_Version_t  srpVer,
CRYS_SRP_Modulus_t  srpModulus,
uint8_t  srpGen,
size_t  modSizeInBits,
CRYS_HASH_OperationMode_t  hashMode,
uint8_t *  pUserName,
size_t  userNameSize,
uint8_t *  pPwd,
size_t  pwdSize,
void *  pRndState,
SaSiRndGenerateVectWorkFunc_t  rndGenerateVectFunc,
CRYS_SRP_Context_t *  pCtx 
)

This function initiates the SRP context.

Returns:
CRYS_OK on success.
A non-zero value on failure as defined crys_srp_error.h or crys_hash_error.h.
Parameters:
[in]srpTypeSRP entity type.
[in]srpVerSRP version.
[in]srpModulusA pointer to the SRP modulus, BE byte buffer.
[in]srpGenThe SRP generator param.
[in]modSizeInBitsThe SRP modulus size in bits:1024, 1536, 2048 & 3072
[in]hashModeEnumerator defining the HASH mode.
[in]pUserNameA Pointer to user name.
[in]userNameSizeThe user name buffer size > 0.
[in]pPwdA Pointer to user password.
[in]pwdSizeThe user password buffer size > 0 if pPwd is valid.
[in]pRndStateA Pointer to RND context.
[in]rndGenerateVectFuncPointer to random vector generation function.
[out]pCtxA Pointer to the SRP host context.
CIMPORT_C CRYSError_t CRYS_SRP_PwdVerCreate ( size_t  saltSize,
uint8_t *  pSalt,
CRYS_SRP_Modulus_t  pwdVerifier,
CRYS_SRP_Context_t *  pCtx 
)

This function calculates pSalt & password verifier.

Returns:
CRYS_OK on success.
A non-zero value on failure as defined crys_srp_error.h, crys_rnd_error.h or crys_hash_error.h.
Parameters:
[in]saltSizeThe size of the random salt to generate, The range is between CRYS_SRP_MIN_SALT_SIZE to CRYS_SRP_MAX_SALT_SIZE.
[out]pSaltA Pointer to the pSalt number (s).
[out]pwdVerifierA Pointer to the password verifier (v).
[out]pCtxA Pointer to the SRP context.
CIMPORT_C CRYSError_t CRYS_SRP_UserProofCalc ( size_t  saltSize,
uint8_t *  pSalt,
CRYS_SRP_Modulus_t  userPubKeyA,
CRYS_SRP_Modulus_t  hostPubKeyB,
CRYS_SRP_Digest_t  userProof,
CRYS_SRP_Secret_t  sharedSecret,
CRYS_SRP_Context_t *  pCtx 
)

This function calculates the user proof.

Returns:
CRYS_OK on success.
A non-zero value on failure as defined crys_srp_error.h or crys_hash_error.h.
Parameters:
[in]saltSizeThe size of the random salt, The range is between CRYS_SRP_MIN_SALT_SIZE to CRYS_SRP_MAX_SALT_SIZE.
[in]pSaltA Pointer to the pSalt number.
[in]userPubKeyAA Pointer to the user public ephmeral key (A).
[in]hostPubKeyBA Pointer to the host public ephmeral key (B).
[out]userProofA Pointer to the SRP user proof buffer (M1).
[out]sharedSecretA Pointer to the SRP shared secret (K).
[out]pCtxA Pointer to the SRP context.
CIMPORT_C CRYSError_t CRYS_SRP_UserProofVerify ( CRYS_SRP_Secret_t  sharedSecret,
CRYS_SRP_Modulus_t  userPubKeyA,
CRYS_SRP_Digest_t  userProof,
CRYS_SRP_Digest_t  hostProof,
CRYS_SRP_Context_t *  pCtx 
)

This function verifies the host proof.

Returns:
CRYS_OK on success.
A non-zero value on failure as defined crys_srp_error.h or crys_hash_error.h.
Parameters:
[in]sharedSecretA Pointer to the SRP shared secret (K).
[in]userPubKeyAA Pointer to the user public ephmeral key (A).
[in]userProofA Pointer to the SRP user proof buffer (M1).
[in]hostProofA Pointer to the SRP host proof buffer (M2).
[out]pCtxA Pointer to the SRP user context.
CIMPORT_C CRYSError_t CRYS_SRP_UserPubKeyCreate ( size_t  ephemPrivSize,
CRYS_SRP_Modulus_t  userPubKeyA,
CRYS_SRP_Context_t *  pCtx 
)

This function generates user public & private ephemeral key, known as A & a in RFC.

Returns:
CRYS_OK on success.
A non-zero value on failure as defined crys_srp_error.h or crys_rnd_error.h.
Parameters:
[in]ephemPrivSizeThe size of the generated ephemeral private key (a). The range is between CRYS_SRP_PRIV_NUM_MIN_SIZE to CRYS_SRP_PRIV_NUM_MAX_SIZE
[out]userPubKeyAA Pointer to the user ephemeral public key (A).
[in,out]pCtxA Pointer to the SRP context.
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