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Update to expose reasonable DER buffer sizes for Curve448/25519

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This commit is contained in:
Bill Phipps
2025-04-08 15:17:54 -04:00
parent 6d299ea943
commit c3dbe29f21
4 changed files with 17 additions and 5 deletions
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6
tests/api/test_ed448.c
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@@ -415,7 +415,7 @@ int test_wc_Ed448PublicKeyToDer(void)
#if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_EXPORT) && \ #if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_EXPORT) && \
(defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN)) (defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN))
ed448_key key; ed448_key key;
byte derBuf[1024]; byte derBuf[CURVE448_BUFSIZE];
XMEMSET(&key, 0, sizeof(ed448_key)); XMEMSET(&key, 0, sizeof(ed448_key));
@@ -458,7 +458,7 @@ int test_wc_Ed448KeyToDer(void)
EXPECT_DECLS; EXPECT_DECLS;
#if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_EXPORT) && \ #if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_EXPORT) && \
(defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN)) (defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN))
byte output[ONEK_BUF]; byte output[CURVE448_BUFSIZE];
ed448_key ed448Key; ed448_key ed448Key;
WC_RNG rng; WC_RNG rng;
word32 inLen; word32 inLen;
@@ -497,7 +497,7 @@ int test_wc_Ed448PrivateKeyToDer(void)
EXPECT_DECLS; EXPECT_DECLS;
#if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_EXPORT) && \ #if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_EXPORT) && \
(defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN)) (defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN))
byte output[ONEK_BUF]; byte output[CURVE448_BUFSIZE];
ed448_key ed448PrivKey; ed448_key ed448PrivKey;
WC_RNG rng; WC_RNG rng;
word32 inLen; word32 inLen;

4
wolfcrypt/test/test.c
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@@ -35544,8 +35544,8 @@ static wc_test_ret_t curve255519_der_test(void)
0xA2, 0x5B, 0x38, 0xFD, 0x96, 0xDB, 0x2A, 0x26 0xA2, 0x5B, 0x38, 0xFD, 0x96, 0xDB, 0x2A, 0x26
}; };
curve25519_key key; curve25519_key key;
byte output[128]; byte output[CURVE25519_BUFSIZE];
word32 outputSz = 128; word32 outputSz = (word32)sizeof(output);
word32 idx; word32 idx;
ret = wc_curve25519_init_ex(&key, HEAP_HINT, devId); ret = wc_curve25519_init_ex(&key, HEAP_HINT, devId);

6
wolfssl/wolfcrypt/curve25519.h
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@@ -45,6 +45,12 @@
#define CURVE25519_KEYSIZE 32 #define CURVE25519_KEYSIZE 32
#define CURVE25519_PUB_KEY_SIZE 32 #define CURVE25519_PUB_KEY_SIZE 32
enum {
CURVE25519_BUFSIZE = 128, /* for exported DER keys temp buffer */
WOLF_ENUM_DUMMY_LAST_ELEMENT(CURVE25519)
};
#ifdef WOLFSSL_NAMES_STATIC #ifdef WOLFSSL_NAMES_STATIC
typedef char curve25519_str[12]; typedef char curve25519_str[12];
#else #else

6
wolfssl/wolfcrypt/curve448.h
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@@ -43,6 +43,12 @@
#define CURVE448_KEY_SIZE 56 #define CURVE448_KEY_SIZE 56
#define CURVE448_PUB_KEY_SIZE 56 #define CURVE448_PUB_KEY_SIZE 56
enum {
CURVE448_BUFSIZE = 128, /* for DER exported keys temp buffer */
WOLF_ENUM_DUMMY_LAST_ELEMENT(CURVE448)
};
#ifndef WC_CURVE448KEY_TYPE_DEFINED #ifndef WC_CURVE448KEY_TYPE_DEFINED
typedef struct curve448_key curve448_key; typedef struct curve448_key curve448_key;
#define WC_CURVE448KEY_TYPE_DEFINED #define WC_CURVE448KEY_TYPE_DEFINED