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cm/hashed format ¶

Integrity protected container, analogue to ASN.1-based CMS DigestedData.

Stored in a file, it should begin with "cm/hashed" magic.

ai {{field . {str} >0}}

hashed {
    {field a {list} {of ai} >0}
    {field t {str} >0}
    {field v {bin blob} optional}
    {field hash {list} {of bin} >0}
}

/a tells what algorithms will be used to hash the data.

/t tells the type of the data inside.

/hash contains the hash values for all corresponding /a algorithms.

• Merkle hashing:		Merkle-tree based hashing
• cm-hashed-blake2b:		cm/hashed with BLAKE2b
• cm-hashed-blake2b-merkle:		cm/hashed with BLAKE2b in Merkle-tree mode
• cm-hashed-blake3:		cm/hashed with BLAKE3
• cm-hashed-shake:		cm/hashed with SHAKE
• cm-hashed-shake-merkle:		cm/hashed with SHAKE in Merkle-tree mode
• cm-hashed-skein512:		cm/hashed with Skein-512
• cm-hashed-gost3411:		cm/hashed with GOST R 34.11-2012
• cm-hashed-gost3411-merkle:		cm/hashed with GOST R 34.11-2012 in Merkle tree mode
• cm-hashed-xxh3-128:		cm/hashed with XXH3-128