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crypto.h: use DTLS_EC_KEY_SIZE for dtls_handshake_parameters_ecdsa_t. #240

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merged 1 commit into from
Aug 27, 2024
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crypto.h: use DTLS_EC_KEY_SIZE for dtls_handshake_parameters_ecdsa_t. #240

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15 changes: 8 additions & 7 deletions crypto.h
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,9 @@
#define DTLS_MAC_LENGTH DTLS_HMAC_DIGEST_SIZE
#define DTLS_IV_LENGTH 4 /* length of nonce_explicit */

/* EC key size for curve secp256r1 */
#define DTLS_EC_KEY_SIZE 32

/**
* Maximum size of the generated keyblock. Note that MAX_KEYBLOCK_LENGTH must
* be large enough to hold the pre_master_secret, i.e. twice the length of the
Expand Down Expand Up @@ -78,11 +81,11 @@ typedef struct dtls_cipher_context_t {
} dtls_cipher_context_t;

typedef struct {
uint8 own_eph_priv[32];
uint8 other_eph_pub_x[32];
uint8 other_eph_pub_y[32];
uint8 other_pub_x[32];
uint8 other_pub_y[32];
uint8 own_eph_priv[DTLS_EC_KEY_SIZE];
uint8 other_eph_pub_x[DTLS_EC_KEY_SIZE];
uint8 other_eph_pub_y[DTLS_EC_KEY_SIZE];
uint8 other_pub_x[DTLS_EC_KEY_SIZE];
uint8 other_pub_y[DTLS_EC_KEY_SIZE];
} dtls_handshake_parameters_ecdsa_t;

/* This is the maximal supported length of the psk client identity and psk
Expand Down Expand Up @@ -420,8 +423,6 @@ int dtls_decrypt(const unsigned char *src, size_t length,
int dtls_psk_pre_master_secret(unsigned char *key, size_t keylen,
unsigned char *result, size_t result_len);

#define DTLS_EC_KEY_SIZE 32

int dtls_ecdh_pre_master_secret(unsigned char *priv_key,
unsigned char *pub_key_x,
unsigned char *pub_key_y,
Expand Down
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