Module digest

digest module perform digest operations base on OpenSSL EVP API.

Usage:

    digest = require('openssl').digest
    

Functions

list ([alias]) list all support digest algs
get (alg) get evp_digest object
new (alg) get evp_digest_ctx object
digest (alg, msg[, raw]) quick method to generate digest result
signInit (alg[, object=nil]) create digest object for sign
verifyInit (alg[, object=nil]) create digest object for verify

Class evp_digest

evp_digest:digest (msg[, eng]) compute msg digest result
evp_digest:info () get infomation of evp_digest object
evp_digest:new ([eng]) create new evp_digest_ctx
evp_digest:signInit ([object=nil]) create digest object for sign
evp_digest:verifyInit ([object=nil]) create digest object for verify

Class evp_digest_ctx

evp_digest_ctx:info () get infomation of evp_digest_ctx object
evp_digest_ctx:update (msg) feed data to do digest
evp_digest_ctx:final ([last[, raw]]) get result of digest
evp_digest_ctx:reset () reset evp_diget_ctx to reuse
evp_digest_ctx:data () retrieve md data
evp_digest_ctx:data (md_data) restore md data
evp_digest_ctx:verifyUpdate (data) feed data for sign to get signature
evp_digest_ctx:verifyUpdate (data) feed data for verify with signature
evp_digest_ctx:signFinal (private) get result of sign
evp_digest_ctx:verifyFinal (signature) get verify result
evp_digest_ctx:sign (ctx, data) get result of oneshot sign
evp_digest_ctx:verify (ctx, signature, to, signature) get result of oneshot verify


Functions

list ([alias])
list all support digest algs

Parameters:

  • alias boolean include alias names for digest alg, default true (optional)

Returns:

    all methods
get (alg)
get evp_digest object

Parameters:

  • alg string, integer or asn1_object name, nid or object identity

Returns:

    evp_digest digest object mapping EVP_MD in openssl

See also:

new (alg)
get evp_digest_ctx object

Parameters:

  • alg string, integer or asn1_object name, nid or object identity

Returns:

    evp_digest_ctx digest object mapping EVP_MD_CTX in openssl

See also:

digest (alg, msg[, raw])
quick method to generate digest result

Parameters:

  • alg string, integer or asn1_object name, nid or object identity
  • msg string to compute digest
  • raw boolean binary result return if set true, or hex encoded string default (optional)

Returns:

    string digest result value
signInit (alg[, object=nil])
create digest object for sign

Parameters:

  • alg string, integer or asn1_object name, nid or object identity
  • object engine (default nil)

Returns:

    evp_digest_ctx
verifyInit (alg[, object=nil])
create digest object for verify

Parameters:

  • alg string, integer or asn1_object name, nid or object identity
  • object engine (default nil)

Returns:

    evp_digest_ctx

Class evp_digest

openssl.evp_digest object
evp_digest:digest (msg[, eng])
compute msg digest result

Parameters:

  • msg string data to digest
  • eng engine, (optional)

Returns:

    string result a binary hash value for msg
evp_digest:info ()
get infomation of evp_digest object

Returns:

    table info keys include nid,name size,block_size,pkey_type,flags
evp_digest:new ([eng])
create new evp_digest_ctx

Parameters:

  • eng engine, (optional)

Returns:

    evp_digest_ctx ctx

See also:

evp_digest:signInit ([object=nil])
create digest object for sign

Parameters:

  • object engine (default nil)

Returns:

    evp_digest_ctx
evp_digest:verifyInit ([object=nil])
create digest object for verify

Parameters:

  • object engine (default nil)

Returns:

    evp_digest_ctx

Class evp_digest_ctx

openssl.evp_digest_ctx object
evp_digest_ctx:info ()
get infomation of evp_digest_ctx object

Returns:

    table info keys include size,block_size,digest
evp_digest_ctx:update (msg)
feed data to do digest

Parameters:

Returns:

    boolean result true for success
evp_digest_ctx:final ([last[, raw]])
get result of digest

Parameters:

  • last string last part of data (optional)
  • raw boolean binary or hexadecimal result, default false for hexadecimal result (optional)

Returns:

    string val hash result
evp_digest_ctx:reset ()
reset evp_diget_ctx to reuse
evp_digest_ctx:data ()
retrieve md data

Returns:

    string md_data
evp_digest_ctx:data (md_data)
restore md data

Parameters:

evp_digest_ctx:verifyUpdate (data)
feed data for sign to get signature

Parameters:

Returns:

    boolean result
evp_digest_ctx:verifyUpdate (data)
feed data for verify with signature

Parameters:

Returns:

    boolean result
evp_digest_ctx:signFinal (private)
get result of sign

Parameters:

  • private evp_pkey key to do sign

Returns:

    string singed result
evp_digest_ctx:verifyFinal (signature)
get verify result

Parameters:

Returns:

    boolean result, true for verify pass
evp_digest_ctx:sign (ctx, data)
get result of oneshot sign

Parameters:

  • ctx evp_digest_ctx
  • data string to sign

Returns:

    string singed result

Or

    nil followd by error message
evp_digest_ctx:verify (ctx, signature, to, signature)
get result of oneshot verify

Parameters:

Returns:

    boolean result, true for verify pass

Or

    string singed result

Or

    nil followd by error message
generated by LDoc 1.5.0 Last updated 2024-05-16 23:31:39