I need to convert a Base 64 encoded public key file in .pem format to byte array using openssl.
Need to convert public key from the below format:
----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxl4aRnRMBB9GZrNgy6sy seyIA3Ek3a1xg0b8gKrCSgnSjH+lqtBGwtzKqM020piE1q0YrzGpfQxNJ8HPRc0F OlII7VKuCFGqEuLH2+kFJPUUdRqBr0iN/D8ADp9rLEL2Q4F7qM1t0z0IW6zD -----END PUBLIC KEY----- to this format:
48, -127, -97, 48, 13, 6, 9, 42, -122, 72, -122, -9, 13,... 
sed -e '/----.*PUBLIC KEY----\|^[[:space:]]*$/d' praj.pem | base64 -d | hexdump -v -e '/1 "%02d, "' ; echo This uses sed to remove the blank lines and lines containing the BEGIN and END markers for the public key, then pipes that into base64 -d to decode it, and then pipes that into hexdump with a custom format to print the bytes as comma-and-space separated decimal numbers. Finally echo is used to make sure the output finishes with a newline (\n).
Output:
48, -126, 01, 34, 48, 13, 06, 09, 42, -122, 72, -122, -9, 13, 01, 01, 01, 05, ... 