crypto/ec/curve448/eddsa.c:278: error: MEMORY_LEAK
  memory dynamically allocated by call to `EVP_MD_CTX_new()` at line 268, column 31 is not reachable after line 278, column 13.
Showing all 44 steps of the trace


crypto/ec/curve448/eddsa.c:244:1: start of procedure c448_ed448_verify()
242.   }
243.   
244. > c448_error_t c448_ed448_verify(
245.                       const uint8_t signature[EDDSA_448_SIGNATURE_BYTES],
246.                       const uint8_t pubkey[EDDSA_448_PUBLIC_BYTES],

crypto/ec/curve448/eddsa.c:252:5: Skipping curve448_point_decode_like_eddsa_and_mul_by_ratio(): empty list of specs
250.   {
251.       curve448_point_t pk_point, r_point;
252.       c448_error_t error =
           ^
253.           curve448_point_decode_like_eddsa_and_mul_by_ratio(pk_point, pubkey);
254.       curve448_scalar_t challenge_scalar;

crypto/ec/curve448/eddsa.c:258:9: Taking false branch
256.       unsigned int c;
257.   
258.       if (C448_SUCCESS != error)
               ^
259.           return error;
260.   

crypto/ec/curve448/eddsa.c:261:5: Skipping curve448_point_decode_like_eddsa_and_mul_by_ratio(): empty list of specs
259.           return error;
260.   
261.       error =
           ^
262.           curve448_point_decode_like_eddsa_and_mul_by_ratio(r_point, signature);
263.       if (C448_SUCCESS != error)

crypto/ec/curve448/eddsa.c:263:9: Taking false branch
261.       error =
262.           curve448_point_decode_like_eddsa_and_mul_by_ratio(r_point, signature);
263.       if (C448_SUCCESS != error)
               ^
264.           return error;
265.   

crypto/ec/curve448/eddsa.c:268:9: 
266.       {
267.           /* Compute the challenge */
268. >         EVP_MD_CTX *hashctx = EVP_MD_CTX_new();
269.           uint8_t challenge[2 * EDDSA_448_PRIVATE_BYTES];
270.   

crypto/evp/digest.c:44:1: start of procedure EVP_MD_CTX_new()
  42.   }
  43.   
  44. > EVP_MD_CTX *EVP_MD_CTX_new(void)
  45.   {
  46.       return OPENSSL_zalloc(sizeof(EVP_MD_CTX));

crypto/evp/digest.c:46:5: 
  44.   EVP_MD_CTX *EVP_MD_CTX_new(void)
  45.   {
  46. >     return OPENSSL_zalloc(sizeof(EVP_MD_CTX));
  47.   }
  48.   

crypto/mem.c:221:1: start of procedure CRYPTO_zalloc()
    219.   }
    220.   
    221. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
    222.   {
    223.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:223:5: 
    221.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
    222.   {
    223. >     void *ret = CRYPTO_malloc(num, file, line);
    224.   
    225.       FAILTEST();

crypto/mem.c:192:1: start of procedure CRYPTO_malloc()
      190.   #endif
      191.   
      192. > void *CRYPTO_malloc(size_t num, const char *file, int line)
      193.   {
      194.       void *ret = NULL;

crypto/mem.c:194:5: 
      192.   void *CRYPTO_malloc(size_t num, const char *file, int line)
      193.   {
      194. >     void *ret = NULL;
      195.   
      196.       INCREMENT(malloc_count);

crypto/mem.c:197:9: Taking false branch
      195.   
      196.       INCREMENT(malloc_count);
      197.       if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)
                     ^
      198.           return malloc_impl(num, file, line);
      199.   

crypto/mem.c:200:9: Taking false branch
      198.           return malloc_impl(num, file, line);
      199.   
      200.       if (num == 0)
                     ^
      201.           return NULL;
      202.   

crypto/mem.c:204:5: 
      202.   
      203.       FAILTEST();
      204. >     allow_customize = 0;
      205.   #ifndef OPENSSL_NO_CRYPTO_MDEBUG
      206.       if (call_malloc_debug) {

crypto/mem.c:214:5: 
      212.       }
      213.   #else
      214. >     (void)(file); (void)(line);
      215.       ret = malloc(num);
      216.   #endif

crypto/mem.c:214:19: 
      212.       }
      213.   #else
      214. >     (void)(file); (void)(line);
      215.       ret = malloc(num);
      216.   #endif

crypto/mem.c:215:5: 
      213.   #else
      214.       (void)(file); (void)(line);
      215. >     ret = malloc(num);
      216.   #endif
      217.   

crypto/mem.c:218:5: 
      216.   #endif
      217.   
      218. >     return ret;
      219.   }
      220.   

crypto/mem.c:219:1: return from a call to CRYPTO_malloc
      217.   
      218.       return ret;
      219. > }
      220.   
      221.   void *CRYPTO_zalloc(size_t num, const char *file, int line)

crypto/mem.c:226:9: Taking true branch
    224.   
    225.       FAILTEST();
    226.       if (ret != NULL)
                   ^
    227.           memset(ret, 0, num);
    228.       return ret;

crypto/mem.c:227:9: 
    225.       FAILTEST();
    226.       if (ret != NULL)
    227. >         memset(ret, 0, num);
    228.       return ret;
    229.   }

crypto/mem.c:228:5: 
    226.       if (ret != NULL)
    227.           memset(ret, 0, num);
    228. >     return ret;
    229.   }
    230.   

crypto/mem.c:229:1: return from a call to CRYPTO_zalloc
    227.           memset(ret, 0, num);
    228.       return ret;
    229. > }
    230.   
    231.   void *CRYPTO_realloc(void *str, size_t num, const char *file, int line)

crypto/evp/digest.c:47:1: return from a call to EVP_MD_CTX_new
  45.   {
  46.       return OPENSSL_zalloc(sizeof(EVP_MD_CTX));
  47. > }
  48.   
  49.   void EVP_MD_CTX_free(EVP_MD_CTX *ctx)

crypto/ec/curve448/eddsa.c:271:13: Taking false branch
269.           uint8_t challenge[2 * EDDSA_448_PRIVATE_BYTES];
270.   
271.           if (hashctx == NULL
                   ^
272.                   || !hash_init_with_dom(hashctx, prehashed, 0, context,
273.                                          context_len)

crypto/ec/curve448/eddsa.c:272:21: 
270.   
271.           if (hashctx == NULL
272. >                 || !hash_init_with_dom(hashctx, prehashed, 0, context,
273.                                          context_len)
274.                   || !EVP_DigestUpdate(hashctx, signature, EDDSA_448_PUBLIC_BYTES)

crypto/ec/curve448/eddsa.c:48:1: start of procedure hash_init_with_dom()
  46.   }
  47.   
  48. > static c448_error_t hash_init_with_dom(EVP_MD_CTX *hashctx, uint8_t prehashed,
  49.                                          uint8_t for_prehash,
  50.                                          const uint8_t *context,

crypto/ec/curve448/eddsa.c:53:5: 
  51.                                          size_t context_len)
  52.   {
  53. >     const char *dom_s = "SigEd448";
  54.       uint8_t dom[2];
  55.   

crypto/ec/curve448/eddsa.c:56:9: Taking true branch
  54.       uint8_t dom[2];
  55.   
  56.       if (context_len > UINT8_MAX)
                ^
  57.           return C448_FAILURE;
  58.   

crypto/ec/curve448/eddsa.c:57:9: 
  55.   
  56.       if (context_len > UINT8_MAX)
  57. >         return C448_FAILURE;
  58.   
  59.       dom[0] = (uint8_t)(2 - (prehashed == 0 ? 1 : 0)

crypto/ec/curve448/eddsa.c:71:1: return from a call to hash_init_with_dom
  69.   
  70.       return C448_SUCCESS;
  71. > }
  72.   
  73.   /* In this file because it uses the hash */

crypto/ec/curve448/eddsa.c:272:21: Taking true branch
270.   
271.           if (hashctx == NULL
272.                   || !hash_init_with_dom(hashctx, prehashed, 0, context,
                           ^
273.                                          context_len)
274.                   || !EVP_DigestUpdate(hashctx, signature, EDDSA_448_PUBLIC_BYTES)

crypto/ec/curve448/eddsa.c:278:13: 
276.                   || !EVP_DigestUpdate(hashctx, message, message_len)
277.                   || !EVP_DigestFinalXOF(hashctx, challenge, sizeof(challenge))) {
278. >             EVP_MD_CTX_free(hashctx);
279.               return C448_FAILURE;
280.           }

crypto/evp/digest.c:49:1: start of procedure EVP_MD_CTX_free()
  47.   }
  48.   
  49. > void EVP_MD_CTX_free(EVP_MD_CTX *ctx)
  50.   {
  51.       EVP_MD_CTX_reset(ctx);

crypto/evp/digest.c:51:5: Skipping EVP_MD_CTX_reset(): empty list of specs
  49.   void EVP_MD_CTX_free(EVP_MD_CTX *ctx)
  50.   {
  51.       EVP_MD_CTX_reset(ctx);
            ^
  52.       OPENSSL_free(ctx);
  53.   }

crypto/evp/digest.c:52:5: 
  50.   {
  51.       EVP_MD_CTX_reset(ctx);
  52. >     OPENSSL_free(ctx);
  53.   }
  54.   

crypto/mem.c:289:1: start of procedure CRYPTO_free()
    287.   }
    288.   
    289. > void CRYPTO_free(void *str, const char *file, int line)
    290.   {
    291.       INCREMENT(free_count);

crypto/mem.c:292:9: Taking true branch
    290.   {
    291.       INCREMENT(free_count);
    292.       if (free_impl != NULL && free_impl != &CRYPTO_free) {
                   ^
    293.           free_impl(str, file, line);
    294.           return;

crypto/mem.c:292:30: Taking true branch
    290.   {
    291.       INCREMENT(free_count);
    292.       if (free_impl != NULL && free_impl != &CRYPTO_free) {
                                        ^
    293.           free_impl(str, file, line);
    294.           return;

crypto/mem.c:293:9: Skipping __function_pointer__(): unresolved function pointer
    291.       INCREMENT(free_count);
    292.       if (free_impl != NULL && free_impl != &CRYPTO_free) {
    293.           free_impl(str, file, line);
                   ^
    294.           return;
    295.       }

crypto/mem.c:294:9: 
    292.       if (free_impl != NULL && free_impl != &CRYPTO_free) {
    293.           free_impl(str, file, line);
    294. >         return;
    295.       }
    296.   

crypto/mem.c:308:1: return from a call to CRYPTO_free
    306.       free(str);
    307.   #endif
    308. > }
    309.   
    310.   void CRYPTO_clear_free(void *str, size_t num, const char *file, int line)

crypto/evp/digest.c:53:1: return from a call to EVP_MD_CTX_free
  51.       EVP_MD_CTX_reset(ctx);
  52.       OPENSSL_free(ctx);
  53. > }
  54.   
  55.   int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type)

c448_error_t c448_ed448_verify(
                    const uint8_t signature[EDDSA_448_SIGNATURE_BYTES],
                    const uint8_t pubkey[EDDSA_448_PUBLIC_BYTES],
                    const uint8_t *message, size_t message_len,
                    uint8_t prehashed, const uint8_t *context,
                    uint8_t context_len)
{
    curve448_point_t pk_point, r_point;
    c448_error_t error =
        curve448_point_decode_like_eddsa_and_mul_by_ratio(pk_point, pubkey);
    curve448_scalar_t challenge_scalar;
    curve448_scalar_t response_scalar;
    unsigned int c;
    if (C448_SUCCESS != error)
        return error;
    error =
        curve448_point_decode_like_eddsa_and_mul_by_ratio(r_point, signature);
    if (C448_SUCCESS != error)
        return error;
    {
        EVP_MD_CTX *hashctx = EVP_MD_CTX_new();
        uint8_t challenge[2 * EDDSA_448_PRIVATE_BYTES];
        if (hashctx == NULL
                || !hash_init_with_dom(hashctx, prehashed, 0, context,
                                       context_len)
                || !EVP_DigestUpdate(hashctx, signature, EDDSA_448_PUBLIC_BYTES)
                || !EVP_DigestUpdate(hashctx, pubkey, EDDSA_448_PUBLIC_BYTES)
                || !EVP_DigestUpdate(hashctx, message, message_len)
                || !EVP_DigestFinalXOF(hashctx, challenge, sizeof(challenge))) {
            EVP_MD_CTX_free(hashctx);
            return C448_FAILURE;
        }
        EVP_MD_CTX_free(hashctx);
        curve448_scalar_decode_long(challenge_scalar, challenge,
                                    sizeof(challenge));
        OPENSSL_cleanse(challenge, sizeof(challenge));
    }
    curve448_scalar_sub(challenge_scalar, curve448_scalar_zero,
                        challenge_scalar);
    curve448_scalar_decode_long(response_scalar,
                                &signature[EDDSA_448_PUBLIC_BYTES],
                                EDDSA_448_PRIVATE_BYTES);
    for (c = 1; c < C448_EDDSA_DECODE_RATIO; c <<= 1)
        curve448_scalar_add(response_scalar, response_scalar, response_scalar);
    curve448_base_double_scalarmul_non_secret(pk_point,
                                              response_scalar,
                                              pk_point, challenge_scalar);
    return c448_succeed_if(curve448_point_eq(pk_point, r_point));
}
['c448_error_t c448_ed448_verify(\n                    const uint8_t signature[EDDSA_448_SIGNATURE_BYTES],\n                    const uint8_t pubkey[EDDSA_448_PUBLIC_BYTES],\n                    const uint8_t *message, size_t message_len,\n                    uint8_t prehashed, const uint8_t *context,\n                    uint8_t context_len)\n{\n    curve448_point_t pk_point, r_point;\n    c448_error_t error =\n        curve448_point_decode_like_eddsa_and_mul_by_ratio(pk_point, pubkey);\n    curve448_scalar_t challenge_scalar;\n    curve448_scalar_t response_scalar;\n    unsigned int c;\n    if (C448_SUCCESS != error)\n        return error;\n    error =\n        curve448_point_decode_like_eddsa_and_mul_by_ratio(r_point, signature);\n    if (C448_SUCCESS != error)\n        return error;\n    {\n        EVP_MD_CTX *hashctx = EVP_MD_CTX_new();\n        uint8_t challenge[2 * EDDSA_448_PRIVATE_BYTES];\n        if (hashctx == NULL\n                || !hash_init_with_dom(hashctx, prehashed, 0, context,\n                                       context_len)\n                || !EVP_DigestUpdate(hashctx, signature, EDDSA_448_PUBLIC_BYTES)\n                || !EVP_DigestUpdate(hashctx, pubkey, EDDSA_448_PUBLIC_BYTES)\n                || !EVP_DigestUpdate(hashctx, message, message_len)\n                || !EVP_DigestFinalXOF(hashctx, challenge, sizeof(challenge))) {\n            EVP_MD_CTX_free(hashctx);\n            return C448_FAILURE;\n        }\n        EVP_MD_CTX_free(hashctx);\n        curve448_scalar_decode_long(challenge_scalar, challenge,\n                                    sizeof(challenge));\n        OPENSSL_cleanse(challenge, sizeof(challenge));\n    }\n    curve448_scalar_sub(challenge_scalar, curve448_scalar_zero,\n                        challenge_scalar);\n    curve448_scalar_decode_long(response_scalar,\n                                &signature[EDDSA_448_PUBLIC_BYTES],\n                                EDDSA_448_PRIVATE_BYTES);\n    for (c = 1; c < C448_EDDSA_DECODE_RATIO; c <<= 1)\n        curve448_scalar_add(response_scalar, response_scalar, response_scalar);\n    curve448_base_double_scalarmul_non_secret(pk_point,\n                                              response_scalar,\n                                              pk_point, challenge_scalar);\n    return c448_succeed_if(curve448_point_eq(pk_point, r_point));\n}', 'EVP_MD_CTX *EVP_MD_CTX_new(void)\n{\n    return OPENSSL_zalloc(sizeof(EVP_MD_CTX));\n}', 'void *CRYPTO_zalloc(size_t num, const char *file, int line)\n{\n    void *ret = CRYPTO_malloc(num, file, line);\n    FAILTEST();\n    if (ret != NULL)\n        memset(ret, 0, num);\n    return ret;\n}', 'void *CRYPTO_malloc(size_t num, const char *file, int line)\n{\n    void *ret = NULL;\n    INCREMENT(malloc_count);\n    if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)\n        return malloc_impl(num, file, line);\n    if (num == 0)\n        return NULL;\n    FAILTEST();\n    allow_customize = 0;\n#ifndef OPENSSL_NO_CRYPTO_MDEBUG\n    if (call_malloc_debug) {\n        CRYPTO_mem_debug_malloc(NULL, num, 0, file, line);\n        ret = malloc(num);\n        CRYPTO_mem_debug_malloc(ret, num, 1, file, line);\n    } else {\n        ret = malloc(num);\n    }\n#else\n    (void)(file); (void)(line);\n    ret = malloc(num);\n#endif\n    return ret;\n}', 'static c448_error_t hash_init_with_dom(EVP_MD_CTX *hashctx, uint8_t prehashed,\n                                       uint8_t for_prehash,\n                                       const uint8_t *context,\n                                       size_t context_len)\n{\n    const char *dom_s = "SigEd448";\n    uint8_t dom[2];\n    if (context_len > UINT8_MAX)\n        return C448_FAILURE;\n    dom[0] = (uint8_t)(2 - (prehashed == 0 ? 1 : 0)\n                       - (for_prehash == 0 ? 1 : 0));\n    dom[1] = (uint8_t)context_len;\n    if (!EVP_DigestInit_ex(hashctx, EVP_shake256(), NULL)\n            || !EVP_DigestUpdate(hashctx, dom_s, strlen(dom_s))\n            || !EVP_DigestUpdate(hashctx, dom, sizeof(dom))\n            || (context_len > 0\n                && !EVP_DigestUpdate(hashctx, context, context_len)))\n        return C448_FAILURE;\n    return C448_SUCCESS;\n}', 'void EVP_MD_CTX_free(EVP_MD_CTX *ctx)\n{\n    EVP_MD_CTX_reset(ctx);\n    OPENSSL_free(ctx);\n}', 'void CRYPTO_free(void *str, const char *file, int line)\n{\n    INCREMENT(free_count);\n    if (free_impl != NULL && free_impl != &CRYPTO_free) {\n        free_impl(str, file, line);\n        return;\n    }\n#ifndef OPENSSL_NO_CRYPTO_MDEBUG\n    if (call_malloc_debug) {\n        CRYPTO_mem_debug_free(str, 0, file, line);\n        free(str);\n        CRYPTO_mem_debug_free(str, 1, file, line);\n    } else {\n        free(str);\n    }\n#else\n    free(str);\n#endif\n}']