From 076560a9507bbe26180f499adf750bc3851b97e8 Mon Sep 17 00:00:00 2001 From: Alex Gaynor Date: Mon, 11 Oct 2021 09:43:28 -0400 Subject: [PATCH] Specify the out length when obtaining the tag for poly1305 --- src/cryptography/hazmat/backends/openssl/poly1305.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/cryptography/hazmat/backends/openssl/poly1305.py b/src/cryptography/hazmat/backends/openssl/poly1305.py index 35f6819ce8..2ddae9847a 100644 --- a/src/cryptography/hazmat/backends/openssl/poly1305.py +++ b/src/cryptography/hazmat/backends/openssl/poly1305.py @@ -51,7 +51,7 @@ def update(self, data): def finalize(self): buf = self._backend._ffi.new("unsigned char[]", _POLY1305_TAG_SIZE) - outlen = self._backend._ffi.new("size_t *") + outlen = self._backend._ffi.new("size_t *", _POLY1305_TAG_SIZE) res = self._backend._lib.EVP_DigestSignFinal(self._ctx, buf, outlen) self._backend.openssl_assert(res != 0) self._backend.openssl_assert(outlen[0] == _POLY1305_TAG_SIZE)