In no case it should not be confused with “encryption” and “decryption” which are used to protect data, while Base64 doesn’t offer any protection. And since we are talking about terms, remember that the conversation of text to Base64 is called “encoding” and the reverse process is called “decoding”. The computation of the r,s values in an ECDSA (which as Oscar correctly commented are not a point) is the same either way, but the data being signed for a. However, from a technical point of view, this process is called “conversation”, therefore, never call it a “Base64 translator”. Bitcoin transactions use DER format for the signature (plus sighash byte), but bitcoin messages use 'plain' format (aka P1363, CVC, PKCS11, Microsoft, JWS and more) (plus recovery byte). Well, by and large, it really “translates” the text into another form. It may seem funny, but some people call the “Base64 converter” a “Base64 translator”. Nevertheless, if you’re missing some Base64 encoding or decoding features, please let me know. I hope that I managed to develop all the necessary converters that meet your needs. They are also simple and free, but they are sharpened for certain tasks. If so, please check the following online convertors. Perhaps this option does not suit your needs, and you want to encode text or decode Base64 using other variations of this algorithm. Please note that this Base64 converter supports only “main standard” and decodes the data in strict mode. Text Base64 Encode text to Base64 Decode Base64 to text Guru A virtual teacher who reveals to you the great secrets of Base64 You wouldn't want to base64 encode twice, because the single decoding would also result in something invalid.Base64. ![]() I'm not a C++ programmer so I'm assuming I need to figure out how key.Recover works. After decoding the Base64 of the signature, the RecoverCompact(hash of message, signature) is called. There are other ways to construct userdata that will already be base64 encoded, so the behaviour of Terraform aws provider is correct here, it needs to be up to the end user whether or not to apply the encoding. THIS is the Bitcoin source that verifies a message. If you are passing plaintext into userdata, suggestion is the right thing to do. I tried decoding mkdir /tmp/test, (the spaces and newlines are skipped by base64 decoding) and it gives Gbf^ This page is useful What happens when you try and run Gbf^ will depend on the platform, but will probably an error like "command not found". When the userdata is executed on the EC2 instance it will be decoded. So while the terraform stack may have planned/applied successfully, the userdata script probably failed. See X.690, section 8.3.2: If the contents octets of an integer value encoding consist of more than one octet, then the bits of the first octet and bit 8 of the second octet: a) shall not all be ones and b) shall not all be. I strongly suspect that your userdata would be decoded into something invalid. The encoding of 'R' is malformed because the leading '00' byte is redundant with the sign bit of the following byte '25'. The code you're referring to in the question is for creating such signatures. It appears to work because your userdata doesn't use any characters outside those used in base64 encoding. For message signatures, a custom encoding is used which is more compact (and more recent) and supports public key recovery (given a message and a signature, find which public key would have created it). It covers the case of both uncompressed and compressed bitcoin addresses (just changing compress. I'd like to contribute with this implementation of bitcoin address from public key. ![]() I don't think your test case really does succeed, even though you don't see the same error. If the public key were correct (see Mark's answer), the code is not complete (lacks signature) and contains a hash of an ASCII hexdigest which is not correct.
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