PKI.sign {PKI} | R Documentation |
PKI.sign
signs content using RSA with the specified hash function
PKI.verify
verifies a signature of RSA-signed content
PKI.sign(what, key, hash = c("SHA1", "SHA256", "MD5"), digest) PKI.verify(what, signature, key, hash = c("SHA1", "SHA256", "MD5"), digest)
what |
raw vector: content to sign |
key |
RSA private key to use for signing; RSA public key or certificate to use for verification. |
hash |
hash function to use. "MD5" should not be used unless absolutely needed for compatibility as it is less secure. |
digest |
raw vector: it is possible to supply the digest of
the content directly instead of specifying |
signature |
raw vector: signature |
Objects are signed by computing a hash function digest (typically
using SHA1
hash function) and then signing the digest with a
RSA key. Verification is done by computing the digest and then
comparing the signature to the digest. Private key is needed for
signing whereas public key is needed for verification.
Both functions call PKI.digest
on what
if
digest
is not specified.
PKI.sign
signature (raw vector)
PKI.verify
logical: TRUE
if the digest and signature
match, FALSE
otherwise
Simon Urbanek
PKI.pubkey
, PKI.genRSAkey
,
PKI.digest
key <- PKI.genRSAkey(2048) x <- charToRaw("My message to sign") sig <- PKI.sign(x, key) stopifnot(PKI.verify(x, sig, key))