Here's a simple/stupid test program and its output, running on Ubuntu 20.04 LTS:
OpenSSL 1.1.1f 31 Mar 2020 EVP_CIPHER_CTX_new returns 0x5627171042a0 EVP_CipherInit returns 1 EVP_CipherUpdate returns 1, outlen = 0 buf: 'Mary had a littl' EVP_CipherFinal returns 0, finallen = 0 buf: 'Mary had a littl' final: '****************' Arguably, "outlen" should be the same as "inlen" when calling EVP_CipherUpdate() for ECB. EVP_CipherFinal() should return 1... not clear what the appropriate value of "outlen" should be in that case, guessing 0?
test.c
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