Code:

$bitcoin$<length of encrypted key>$<encrypted key>$<length of salt>$<salt>$<derivation method iteration count>$<length of derivation method>$<derivation method>$<length of additional parameters>$<additional parameters>$

<length of encrypted key> is always 64. The encrypted key is a 32 byte key which means it is 64 characters. <encrypted key> is the encryption key which itself is encrypted with your passphrase. Your passphrase is hashed to get the key that is used to encrypt this encrypted key. <length of salt> is always 16. The salt is 8 bytes which means it is 16 characters. <salt> is the salt. It is randomly generated. The salt is combined with your passphrase to generate the key used to encrypt the actual encryption key. <derivation method iteration count> is the number of times to run the hash function that is used to derive the encryption key from your passphrase. <length of derivation method> is always 2. The derivation method is stored as a single byte number, so it is always 2 characters. <derivation method> is an integer that indicates the function to be used to derive the encryption key from the passphrase. Currently there is only one method, SHA512, and it is indicated with the number 0. <length of additional parameters> is always 2. There are no additional parameters, so it is represented by a single byte of 0, which makes the length 2 characters. <additional parameters> is always 00. There are no additional parameters, so it is always a 0 byte.

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