lcx_common.h | Developers

lcx_common.h

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Cryptography flags. More...

Data Structures

struct  uint64_s
 64-bit types, native or by-hands, depending on target and/or compiler support. More...

Macros

#define ARCH_LITTLE_ENDIAN
#define CX_FLAG
 Cryptography flags. More...
#define CX_LAST   (1 << 0)
 Bit 0: Last block. More...
#define CX_SIG_MODE   (1 << 1)
 Bit 1: Signature or verification. More...
#define CX_MASK_SIGCRYPT   (3 << 1)
 Bit 2:1: Signature and/or encryption. More...
#define CX_ENCRYPT   (2 << 1)
#define CX_DECRYPT   (0 << 1)
#define CX_SIGN   (CX_SIG_MODE | CX_ENCRYPT)
#define CX_VERIFY   (CX_SIG_MODE | CX_DECRYPT)
#define CX_MASK_PAD   (7 << 3)
 Bit 5:3: Padding. More...
#define CX_PAD_NONE   (0 << 3)
#define CX_PAD_ISO9797M1   (1 << 3)
#define CX_PAD_ISO9797M2   (2 << 3)
#define CX_PAD_PKCS1_1o5   (3 << 3)
#define CX_PAD_PKCS1_PSS   (4 << 3)
#define CX_PAD_PKCS1_OAEP   (5 << 3)
#define CX_MASK_CHAIN   (7 << 6)
 Bit 8:6 DES/AES chaining. More...
#define CX_CHAIN_ECB   (0 << 6)
#define CX_CHAIN_CBC   (1 << 6)
#define CX_CHAIN_CTR   (2 << 6)
#define CX_CHAIN_CFB   (3 << 6)
#define CX_CHAIN_OFB   (4 << 6)
#define CX_MASK_ECC_VARIANT   (7 << 6)
 Bit 8:6 ECC variant. More...
#define CX_NO_CANONICAL   (1 << 6)
#define CX_MASK_RND   (7 << 9)
 Bit 11:9 Random number generation. More...
#define CX_RND_PRNG   (1 << 9)
#define CX_RND_TRNG   (2 << 9)
#define CX_RND_RFC6979   (3 << 9)
#define CX_RND_PROVIDED   (4 << 9)
#define CX_MASK_EC   (7 << 12)
 Bit 14:12: ECDH and ECSCHNORR specificities. More...
#define CX_ECSCHNORR_BIP0340   (0 << 12)
#define CX_ECDH_POINT   (1 << 12)
#define CX_ECDH_X   (2 << 12)
#define CX_ECSCHNORR_ISO14888_XY   (3 << 12)
#define CX_ECSCHNORR_ISO14888_X   (4 << 12)
#define CX_ECSCHNORR_BSI03111   (5 << 12)
#define CX_ECSCHNORR_LIBSECP   (6 << 12)
#define CX_ECSCHNORR_Z   (7 << 12)
#define CX_NO_REINIT   (1 << 15)
 Bit 15: No reinitialization. More...

Typedefs

typedef struct uint64_s uint64bits_t

Detailed Description

Cryptography flags.

Flags required by some functions.

Macro Definition Documentation

ARCH_LITTLE_ENDIAN

#define ARCH_LITTLE_ENDIAN

CX_CHAIN_CBC

#define CX_CHAIN_CBC   (1 << 6)

CX_CHAIN_CFB

#define CX_CHAIN_CFB   (3 << 6)

CX_CHAIN_CTR

#define CX_CHAIN_CTR   (2 << 6)

CX_CHAIN_ECB

#define CX_CHAIN_ECB   (0 << 6)

CX_CHAIN_OFB

#define CX_CHAIN_OFB   (4 << 6)

CX_DECRYPT

#define CX_DECRYPT   (0 << 1)

CX_ECDH_POINT

#define CX_ECDH_POINT   (1 << 12)

CX_ECDH_X

#define CX_ECDH_X   (2 << 12)

CX_ECSCHNORR_BIP0340

#define CX_ECSCHNORR_BIP0340   (0 << 12)

CX_ECSCHNORR_BSI03111

#define CX_ECSCHNORR_BSI03111   (5 << 12)

CX_ECSCHNORR_ISO14888_X

#define CX_ECSCHNORR_ISO14888_X   (4 << 12)

CX_ECSCHNORR_ISO14888_XY

#define CX_ECSCHNORR_ISO14888_XY   (3 << 12)

CX_ECSCHNORR_LIBSECP

#define CX_ECSCHNORR_LIBSECP   (6 << 12)

CX_ECSCHNORR_Z

#define CX_ECSCHNORR_Z   (7 << 12)

CX_ENCRYPT

#define CX_ENCRYPT   (2 << 1)

CX_FLAG

#define CX_FLAG

Cryptography flags.

Some functions take logical or of various flags. The following flags are globally defined:

Bits position Values Flags Meaning Algorithms
15 1000000000000000 CX_NO_REINIT Do not reinitialize the context on CX_LAST
14:12 0111000000000000 CX_ECSCHNORR_Z Zilliqa scheme ECSCHNORR
14:12 0110000000000000 CX_ECSCHNORR_LIBSECP ECSCHNORR according to libsecp256k1 ECSCHNORR
14:12 0101000000000000 CX_ECSCHNORR_BSI03111 ECSCHNORR according to BSI TR-03111 ECSCHNORR
14:12 0100000000000000 CX_ECSCHNORR_ISO14888_X ECSCHNORR according to ISO/IEC 14888-3 ECSCHNORR
14:12 0011000000000000 CX_ECSCHNORR_ISO14888_XY ECSCHNORR according to ISO/IEC 14888-3 ECSCHNORR
14:12 0010000000000000 CX_ECDH_X ECDH with the x-coordinate of the point ECDH
14:12 0001000000000000 CX_ECDH_POINT ECDH with a point ECDH
11:9 0000100000000000 CX_RND_PROVIDED Provided random
11:9 0000011000000000 CX_RND_RFC6979 Random from RFC6979
11:9 0000010000000000 CX_RND_TRNG Random from a PRNG
11:9 0000001000000000 CX_RND_PRNG Random from a TRNG
8:6 0000000100000000 CX_CHAIN_OFB Output feedback mode AES/DES
8:6 0000000011000000 CX_CHAIN_CFB Cipher feedback mode AES/DES
8:6 0000000010000000 CX_CHAIN_CTR Counter mode AES/DES
8:6 0000000001000000 CX_CHAIN_CBC Cipher block chaining mode AES/DES
8:6 0000000001000000 CX_NO_CANONICAL Do not compute a canonical signature ECDSA/EDDSA/ECSCHNORR
8:6 0000000000000000 CX_CHAIN_ECB Electronic codebook mode AES/DES
5:3 0000000010100000 CX_PAD_PKCS1_OAEP PKCS1_OAEP padding
5:3 0000000010000000 CX_PAD_PKCS1_PSS PKCS1_PSS padding
5:3 0000000001100000 CX_PAD_PKCS1_1o5 PKCS1-v1_5 padding
5:3 0000000001000000 CX_PAD_ISO9797M2 ISO9797 padding, method 2
5:3 0000000000100000 CX_PAD_ISO9797M1 ISO9797 padding, method 1
5:3 0000000000000000 CX_PAD_NONE No padding
2:1 0000000000000110 CX_SIGN Signature AES/DES
2:1 0000000000000100 CX_ENCRYPT Encryption AES/DES
2:1 0000000000000010 CX_VERIFY Signature verification AES/DES
2:1 0000000000000000 CX_DECRYPT Decryption AES/DES
0 0000000000000001 CX_LAST Last block

CX_LAST

#define CX_LAST   (1 << 0)

Bit 0: Last block.

CX_MASK_CHAIN

#define CX_MASK_CHAIN   (7 << 6)

Bit 8:6 DES/AES chaining.

CX_MASK_EC

#define CX_MASK_EC   (7 << 12)

Bit 14:12: ECDH and ECSCHNORR specificities.

CX_MASK_ECC_VARIANT

#define CX_MASK_ECC_VARIANT   (7 << 6)

Bit 8:6 ECC variant.

CX_MASK_PAD

#define CX_MASK_PAD   (7 << 3)

Bit 5:3: Padding.

CX_MASK_RND

#define CX_MASK_RND   (7 << 9)

Bit 11:9 Random number generation.

CX_MASK_SIGCRYPT

#define CX_MASK_SIGCRYPT   (3 << 1)

Bit 2:1: Signature and/or encryption.

CX_NO_CANONICAL

#define CX_NO_CANONICAL   (1 << 6)

CX_NO_REINIT

#define CX_NO_REINIT   (1 << 15)

Bit 15: No reinitialization.

CX_PAD_ISO9797M1

#define CX_PAD_ISO9797M1   (1 << 3)

CX_PAD_ISO9797M2

#define CX_PAD_ISO9797M2   (2 << 3)

CX_PAD_NONE

#define CX_PAD_NONE   (0 << 3)

CX_PAD_PKCS1_1o5

#define CX_PAD_PKCS1_1o5   (3 << 3)

CX_PAD_PKCS1_OAEP

#define CX_PAD_PKCS1_OAEP   (5 << 3)

CX_PAD_PKCS1_PSS

#define CX_PAD_PKCS1_PSS   (4 << 3)

CX_RND_PRNG

#define CX_RND_PRNG   (1 << 9)

CX_RND_PROVIDED

#define CX_RND_PROVIDED   (4 << 9)

CX_RND_RFC6979

#define CX_RND_RFC6979   (3 << 9)

CX_RND_TRNG

#define CX_RND_TRNG   (2 << 9)

CX_SIG_MODE

#define CX_SIG_MODE   (1 << 1)

Bit 1: Signature or verification.

CX_SIGN

#define CX_SIGN   (CX_SIG_MODE | CX_ENCRYPT)

CX_VERIFY

#define CX_VERIFY   (CX_SIG_MODE | CX_DECRYPT)

Typedef Documentation

uint64bits_t

typedef struct uint64_s uint64bits_t

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