| Bugfix | |
| * Fix mbedtls_base64_decode() on inputs that did not have the correct | |
| number of trailing equal signs, or had 4*k+1 digits. They were accepted | |
| as long as they had at most two trailing equal signs. They are now | |
| rejected. Furthermore, before, on inputs with too few equal signs, the | |
| function reported the correct size in *olen when it returned | |
| MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL, but truncated the output to the | |
| last multiple of 3 bytes. |