PHP - Manual: Phar Signature format

2024-12-21

Phar Signature format

Phars containing a signature always have the signature appended to the end of the Phar archive after the loader, manifest, and file contents. The signature formats supported at this time are MD5, SHA1, SHA256, SHA512, and OPENSSL.

**Signature format**
Length in bytes	Description
varying	The actual signature, 20 bytes for an SHA1 signature, 16 bytes for an MD5 signature, 32 bytes for an SHA256 signature, and 64 bytes for an SHA512 signature. The length of an OPENSSL signature depends on the size of the private key.
4 bytes	Signature flags. `0x0001` is used to define an MD5 signature, `0x0002` is used to define an SHA1 signature, `0x0003` is used to define an SHA256 signature, and `0x0004` is used to define an SHA512 signature. The SHA256 and SHA512 signature support is available as of API version 1.1.0. `0x0010` is used to define an OPENSSL signature, what is available as of API version 1.1.1, if OpenSSL is available.
4 bytes	Magic `GBMB` used to define the presence of a signature.

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官方地址：https://www.php.net/manual/en/phar.fileformat.signature.php

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Phar Signature format

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