Understanding the technical principles of the Base58 Codec framework in Java class libraries

Learn about the technical principles of the Base58 Codec framework in the Java class library Base58 is an encoding method for expressing numbers. It is often used in Java development to encryption, hash and data transmission.Base58 coding naturally eliminates some of the confusing characters such as "0", "O", "i", "L", "//" and other easy -to -confused characters.Strings are more easy to read and avoid confusion.Java developers can achieve support for BASE58 coding by using Base58 compilation code library. The base58 encoding is mainly composed of two pairs of Java class: Base58 and Base58check.The Base58 category provides a basic decoding function, while Base58check integrates Base58 and adds the verification function of detection and repair errors. The main principles of the base58 algorithm are as follows: 1. First, the transmitted data (usually a byte array) is represented by a Biginteger object. The constructor of the object accepts two parameters: data and 2.This sets the base to 2. BigInteger bigInteger = new BigInteger(1, data); 2. Use the base58 algorithm to encode the Biginteger object.In the base58 encoding, each bit of the string represents a character in a specific number of inlet numbers. This inlet number is the quality number closer to 256 than Base58, generally 59.Then use the MOD operation to calculate the index of the current character and convert the index to the corresponding character. StringBuilder encoded = new StringBuilder(); while (bigInteger.compareTo(BASE) >= 0) { BigInteger[] quotientAndRemainder = bigInteger.divideAndRemainder(BASE); encoded.insert(0, ALPHABET.charAt(quotientAndRemainder[1].intValue())); bigInteger = quotientAndRemainder[0]; } encoded.insert(0, ALPHABET.charAt(bigInteger.intValue())); 3. For BASE58CHECK, a verification code will be added while encoding.The verification code is generally the first 4 bytes after the original data of the SHA-256 hash algorithm, and then add the verification code to the encoded string tail. Sha256Hash checksum = Sha256Hash.twiceOf(data); byte[] checksumBytes = Arrays.copyOfRange(checksum.getBytes(), 0, 4); encoded.append(Base58.encode(checksumBytes)); The above is the main technical principle of Base58 encoding.Java developers can use this codec to easily use Base58 encoding for data encryption and transmission.Note that when using the base58 encoding, you need to ensure the correctness and integrity of the data, especially to verify the legality of the data when verifying to ensure that the receiver can correctly decode the data transmitted by. I hope this article can help you understand the technical principles of the Base58 Codec framework in the Java class library.