openssl: Toolkit for Encryption, Signatures and Certificates Based on OpenSSL

Bindings to OpenSSL libssl and libcrypto, plus custom SSH key parsers. Supports RSA, DSA and EC curves P-256, P-384, P-521, and curve25519. Cryptographic signatures can either be created and verified manually or via x509 certificates. AES can be used in cbc, ctr or gcm mode for symmetric encryption; RSA for asymmetric (public key) encryption or EC for Diffie Hellman. High-level envelope functions combine RSA and AES for encrypting arbitrary sized data. Other utilities include key generators, hash functions (md5, sha1, sha256, etc), base64 encoder, a secure random number generator, and 'bignum' math methods for manually performing crypto calculations on large multibyte integers.

Version: 2.1.1
Imports: askpass
Suggests: curl, testthat (≥ 2.1.0), digest, knitr, rmarkdown, jsonlite, jose, sodium
Published: 2023-09-25
Author: Jeroen Ooms ORCID iD [aut, cre], Oliver Keyes [ctb]
Maintainer: Jeroen Ooms <jeroen at>
License: MIT + file LICENSE
NeedsCompilation: yes
SystemRequirements: OpenSSL >= 1.0.2
Materials: NEWS
CRAN checks: openssl results


Reference manual: openssl.pdf
Vignettes: Fun with bignum: how RSA encryption works
Cryptographic Hashing in R
Importing and exporting RSA/DSA/EC keys
Generating Secure Random Numbers in R


Package source: openssl_2.1.1.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): openssl_2.1.1.tgz, r-oldrel (arm64): openssl_2.1.1.tgz, r-release (x86_64): openssl_2.1.1.tgz, r-oldrel (x86_64): openssl_2.1.1.tgz
Old sources: openssl archive

Reverse dependencies:

Reverse depends: D4TAlink.light, jose
Reverse imports: adobeanalyticsr, allometric, aphid, AzureAuth, AzureContainers, AzureCosmosR, AzureGraph, AzureKeyVault, AzureQstor, AzureStor, AzureTableStor, AzureVMmetadata, base64, bcrypt, biodb, cjar, contentid, credentials, cyphr, dclust, distill, encryptr, epidatr, ExPanDaR, firebase, gargle, geonapi, geosapi, gert, ghapps, googleCloudRunner, googleCloudStorageR, GWalkR, httr, httr2, icesSAG, ids, insect, insee, keyring, keyToEnglish, kmer, KoboconnectR, lazytrade, mlflow, mongolite, mstrio, ocs4R, officer, opencpu, otp, ottrpal, ows4R, RBaseX, rbch, rbtc, rDataPipeline, reconstructr, rgoogleclassroom, ricu, RKEEL, rkeops, RPresto, rsconnect, SCDB, secret, SensusR, shinymanager, sparklyr, sship, systemPipeShiny,, umap, voson.tcn, wilson
Reverse suggests: base64url, boxr, circle, dataone, faux, Microsoft365R, neonstore, NxtIRFcore, OlinkAnalyze, pins, pkgdown, RTD, rtweet, solvebio, SpliceWiz, stevedore


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