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SHA

SHA functions

Usage is very straightforward:

julia> using SHAjulia> bytes2hex(sha256("test"))"9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08"

Each exported function (at the time of this writing, SHA-1, SHA-2 224, 256, 384 and 512, and SHA-3 224, 256, 384 and 512 functions are implemented) takes in either anAbstractVector{UInt8}, anAbstractString or anIO object. This makes it trivial to checksum a file:

shell> cat /tmp/test.txttestjulia> using SHAjulia> open("/tmp/test.txt") do f           sha2_256(f)       end32-element Vector{UInt8}: 0x9f 0x86 0xd0 0x81 0x88 0x4c 0x7d 0x65    ⋮ 0x5d 0x6c 0x15 0xb0 0xf0 0x0a 0x08

All SHA functions

Due to the colloquial usage ofsha256 to refer tosha2_256, convenience functions are provided, mappingshaxxx() function calls tosha2_xxx(). For SHA-3, no such colloquialisms exist and the user must use the fullsha3_xxx() names.

shaxxx() takesAbstractString and array-like objects (NTuple andVector) with elements of typeUInt8.

SHA-1

SHA.sha1 —Function
sha1(data)

Hash data using thesha1 algorithm and return the resulting digest. See alsoSHA1_CTX.

sha1(io::IO)

Hash data from io usingsha1 algorithm.

SHA-2

SHA.sha224 —Function
sha224(data)

Hash data using thesha224 algorithm and return the resulting digest. See alsoSHA2_224_CTX.

sha224(io::IO)

Hash data from io usingsha224 algorithm.

SHA.sha256 —Function
sha256(data)

Hash data using thesha256 algorithm and return the resulting digest. See alsoSHA2_256_CTX.

sha256(io::IO)

Hash data from io usingsha256 algorithm.

SHA.sha384 —Function
sha384(data)

Hash data using thesha384 algorithm and return the resulting digest. See alsoSHA2_384_CTX.

sha384(io::IO)

Hash data from io usingsha384 algorithm.

SHA.sha512 —Function
sha512(data)

Hash data using thesha512 algorithm and return the resulting digest. See alsoSHA2_512_CTX.

sha512(io::IO)

Hash data from io usingsha512 algorithm.

SHA.sha2_224 —Function
sha2_224(data)

Hash data using thesha2_224 algorithm and return the resulting digest. See alsoSHA2_224_CTX.

sha2_224(io::IO)

Hash data from io usingsha2_224 algorithm.

SHA.sha2_256 —Function
sha2_256(data)

Hash data using thesha2_256 algorithm and return the resulting digest. See alsoSHA2_256_CTX.

sha2_256(io::IO)

Hash data from io usingsha2_256 algorithm.

SHA.sha2_384 —Function
sha2_384(data)

Hash data using thesha2_384 algorithm and return the resulting digest. See alsoSHA2_384_CTX.

sha2_384(io::IO)

Hash data from io usingsha2_384 algorithm.

SHA.sha2_512 —Function
sha2_512(data)

Hash data using thesha2_512 algorithm and return the resulting digest. See alsoSHA2_512_CTX.

sha2_512(io::IO)

Hash data from io usingsha2_512 algorithm.

SHA.sha2_512_224 —Function
sha2_512_224(data)

Hash data using thesha2_512_224 algorithm and return the resulting digest. See alsoSHA2_512_224_CTX.

sha2_512_224(io::IO)

Hash data from io usingsha2_512_224 algorithm.

SHA.sha2_512_256 —Function
sha2_512_256(data)

Hash data using thesha2_512_256 algorithm and return the resulting digest. See alsoSHA2_512_256_CTX.

sha2_512_256(io::IO)

Hash data from io usingsha2_512_256 algorithm.

SHA-3

SHA.sha3_224 —Function
sha3_224(data)

Hash data using thesha3_224 algorithm and return the resulting digest. See alsoSHA3_224_CTX.

sha3_224(io::IO)

Hash data from io usingsha3_224 algorithm.

SHA.sha3_256 —Function
sha3_256(data)

Hash data using thesha3_256 algorithm and return the resulting digest. See alsoSHA3_256_CTX.

sha3_256(io::IO)

Hash data from io usingsha3_256 algorithm.

SHA.sha3_384 —Function
sha3_384(data)

Hash data using thesha3_384 algorithm and return the resulting digest. See alsoSHA3_384_CTX.

sha3_384(io::IO)

Hash data from io usingsha3_384 algorithm.

SHA.sha3_512 —Function
sha3_512(data)

Hash data using thesha3_512 algorithm and return the resulting digest. See alsoSHA3_512_CTX.

sha3_512(io::IO)

Hash data from io usingsha3_512 algorithm.

Working with context

To create a hash from multiple items theSHAX_XXX_CTX() types can be used to create a stateful hash object that is updated withupdate! and finalized withdigest!

julia> using SHAjulia> ctx = SHA2_256_CTX()SHA2 256-bit hash statejulia> update!(ctx, b"some data")0x0000000000000009julia> update!(ctx, b"some more data")0x0000000000000017julia> digest!(ctx)32-element Vector{UInt8}: 0xbe 0xcf 0x23 0xda 0xaf 0x02 0xf7 0xa3 0x57 0x92    ⋮ 0x89 0x4f 0x59 0xd8 0xb3 0xb4 0x81 0x8b 0xc5

Note that, at the time of this writing, the SHA3 code is not optimized, and as such is roughly an order of magnitude slower than SHA2.

SHA.update! —Function
update!(context, data[, datalen])

Update the SHA context with the bytes in data. See alsodigest! for finalizing the hash.

Examples

julia> ctx = SHA1_CTX()SHA1 hash statejulia> update!(ctx, b"data to to be hashed")
SHA.digest! —Function
digest!(context)

Finalize the SHA context and return the hash as array of bytes (Vector{Uint8}). Updating the context after callingdigest! on it will error.

Examples

julia> ctx = SHA1_CTX()SHA1 hash statejulia> update!(ctx, b"data to to be hashed")julia> digest!(ctx)20-element Vector{UInt8}: 0x83 0xe4 ⋮ 0x89 0xf5julia> update!(ctx, b"more data")ERROR: Cannot update CTX after `digest!` has been called on it[...]

All SHA context types

SHA-1

SHA.SHA1_CTX —Type
SHA1_CTX()

Construct an empty SHA1 context.

SHA-2

Convenience types are also provided, whereSHAXXX_CTX is a type alias forSHA2_XXX_CTX.

SHA.SHA224_CTX —Type
SHA2_224_CTX()

Construct an empty SHA2_224 context.

SHA.SHA256_CTX —Type
SHA2_256_CTX()

Construct an empty SHA2_256 context.

SHA.SHA384_CTX —Type
SHA2_384()

Construct an empty SHA2_384 context.

SHA.SHA512_CTX —Type
SHA2_512_CTX()

Construct an empty SHA2_512 context.

SHA.SHA2_224_CTX —Type
SHA2_224_CTX()

Construct an empty SHA2_224 context.

SHA.SHA2_256_CTX —Type
SHA2_256_CTX()

Construct an empty SHA2_256 context.

SHA.SHA2_384_CTX —Type
SHA2_384()

Construct an empty SHA2_384 context.

SHA.SHA2_512_CTX —Type
SHA2_512_CTX()

Construct an empty SHA2_512 context.

SHA.SHA2_512_224_CTX —Type
SHA2_512_224_CTX()

Construct an empty SHA2_512/224 context and set the initial hash value.

For the source of the initial value, refer toFIPS 180-4, 5.3.6.1 SHA-512/224

SHA.SHA2_512_256_CTX —Type
SHA2_512_256_CTX()

Construct an empty SHA2_512/256 context and set the initial hash value.

For the source of the initial value, refer toFIPS 180-4, 5.3.6.2 SHA-512/256

SHA-3

SHA.SHA3_224_CTX —Type
SHA3_224_CTX()

Construct an empty SHA3_224 context.

SHA.SHA3_256_CTX —Type
SHA3_256_CTX()

Construct an empty SHA3_256 context.

SHA.SHA3_384_CTX —Type
SHA3_384_CTX()

Construct an empty SHA3_384 context.

SHA.SHA3_512_CTX —Type
SHA3_512_CTX()

Construct an empty SHA3_512 context.

HMAC functions

julia> using SHAjulia> key = collect(codeunits("key_string"))10-element Vector{UInt8}: 0x6b 0x65 0x79 0x5f 0x73 0x74 0x72 0x69 0x6e 0x67julia> bytes2hex(hmac_sha3_256(key, "test-message"))"bc49a6f2aa29b27ee5ed1e944edd7f3d153e8a01535d98b5e24dac9a589a6248"

To create a hash from multiple items, theHMAC_CTX() types can be used to create a stateful hash object that is updated withupdate! and finalized withdigest!.

julia> using SHAjulia> key = collect(codeunits("key_string"))10-element Vector{UInt8}: 0x6b 0x65 0x79 0x5f 0x73 0x74 0x72 0x69 0x6e 0x67julia> ctx = HMAC_CTX(SHA3_256_CTX(), key);julia> update!(ctx, b"test-")0x0000000000000000000000000000008djulia> update!(ctx, b"message")0x00000000000000000000000000000094julia> bytes2hex(digest!(ctx))"bc49a6f2aa29b27ee5ed1e944edd7f3d153e8a01535d98b5e24dac9a589a6248"

All HMAC functions

HMAC context type

SHA.HMAC_CTX —Type
HMAC_CTX(ctx::CTX, key::Vector{UInt8}) where {CTX<:SHA_CTX}

Construct an empty HMAC_CTX context.

SHA-1

SHA.hmac_sha1 —Function
hmac_sha1(key, data)

Hash data using thesha1 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha1(key, io::IO)

Hash data fromio with the passed key usingsha1 algorithm.

SHA-2

SHA.hmac_sha224 —Function
hmac_sha224(key, data)

Hash data using thesha224 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha224(key, io::IO)

Hash data fromio with the passed key usingsha224 algorithm.

SHA.hmac_sha256 —Function
hmac_sha256(key, data)

Hash data using thesha256 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha256(key, io::IO)

Hash data fromio with the passed key usingsha256 algorithm.

SHA.hmac_sha384 —Function
hmac_sha384(key, data)

Hash data using thesha384 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha384(key, io::IO)

Hash data fromio with the passed key usingsha384 algorithm.

SHA.hmac_sha512 —Function
hmac_sha512(key, data)

Hash data using thesha512 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha512(key, io::IO)

Hash data fromio with the passed key usingsha512 algorithm.

SHA.hmac_sha2_224 —Function
hmac_sha2_224(key, data)

Hash data using thesha2_224 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha2_224(key, io::IO)

Hash data fromio with the passed key usingsha2_224 algorithm.

SHA.hmac_sha2_256 —Function
hmac_sha2_256(key, data)

Hash data using thesha2_256 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha2_256(key, io::IO)

Hash data fromio with the passed key usingsha2_256 algorithm.

SHA.hmac_sha2_384 —Function
hmac_sha2_384(key, data)

Hash data using thesha2_384 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha2_384(key, io::IO)

Hash data fromio with the passed key usingsha2_384 algorithm.

SHA.hmac_sha2_512 —Function
hmac_sha2_512(key, data)

Hash data using thesha2_512 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha2_512(key, io::IO)

Hash data fromio with the passed key usingsha2_512 algorithm.

SHA-3

SHA.hmac_sha3_224 —Function
hmac_sha3_224(key, data)

Hash data using thesha3_224 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha3_224(key, io::IO)

Hash data fromio with the passed key usingsha3_224 algorithm.

SHA.hmac_sha3_256 —Function
hmac_sha3_256(key, data)

Hash data using thesha3_256 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha3_256(key, io::IO)

Hash data fromio with the passed key usingsha3_256 algorithm.

SHA.hmac_sha3_384 —Function
hmac_sha3_384(key, data)

Hash data using thesha3_384 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha3_384(key, io::IO)

Hash data fromio with the passed key usingsha3_384 algorithm.

SHA.hmac_sha3_512 —Function
hmac_sha3_512(key, data)

Hash data using thesha3_512 algorithm using the passed key. See alsoHMAC_CTX.

hmac_sha3_512(key, io::IO)

Hash data fromio with the passed key usingsha3_512 algorithm.

Settings

This document was generated withDocumenter.jl version 1.16.0 onThursday 20 November 2025. Using Julia version 1.12.2.

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