Signing transaction with SSL - private key to PEM

Signing transaction with SSL - private key to PEM

Given a private key: 3cd0560f5b27591916c643a0b7aa69d03839380a738d2e912990dcc573715d2c, And a tx hash: 456f9e1b6184d770f1a240da9a3c4458e55b6b4ba2244dd21404db30b3131b94, I would like to sign, using SSL and PHP. Converting the private key to a pem format (so SSL can use it), I generate the following base64 string: PNBWD1snWRkWxkOgt6pp0Dg5OApzjS6RKZDcxXNxXSw=. So a valid pem format should be:

-----BEGIN EC PRIVATE KEY----- PNBWD1snWRkWxkOgt6pp0Dg5OApzjS6RKZDcxXNxXSw= -----END EC PRIVATE KEY-----

However, it does not seem to be working. I'm using the following function: openssl_sign($hash, $signature, $private_key, OPENSSL_ALGO_SHA256).

But when I generate a random private key using SSL, for example: -----BEGIN EC PRIVATE KEY----- MHcCAQEEINhhp8dYz31X+KWq3u/gutJthvW2puUbB9AOIul/v2SOoAoGCCqGSM49 AwEHoUQDQgAE0jE7TIszCklw//SGyYW0+z38PUxwfkip9WS4UUn68f7D78D6ZQ/O dlPisC1fQZrUrFrik/wq7E4Xwrqs3n3b5w== -----END EC PRIVATE KEY-----

The function does work. What is wrong with the pem format that I'm generating using an existing private key?

http://ift.tt/2pEqLA4

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