Libraries tagged by signaling

Tools for encryption/decryption and signing/verifying (wraps openssl lib)

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Generate Eip712 Hashes for signing

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Unified client+server security helper for HMAC and AEAD (XChaCha20-Poly1305) with nonce/replay protection and canonical signing. Native PHP 8+, framework-agnostic.

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Finally, a PHP5 class for not just signing, but _verifying_ DKIM signatures.

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Produce ECC x509 Certificates and signing requests (CSR's)

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A comprehensive PHP package for ZATCA (Saudi Arabia e-invoicing) invoice processing, signing, and submission

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A library for signing & verifying documents using estonian id card

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JSON Object Signing and Encryption library for PHP.

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Efficient and secure machine-to-machine API using JSON Web Tokens and asymmetric request signing.

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Austrian RKSV implementation with PrimeSign online certificate signing service

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Signing in to WordPress by link sent to your email. The link will expire in fifteen minutes and can only be used once.

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Guzzle plugin to sign HTTP requests using hmac ... Or, in another words, it is a PHP 5.3+ port of https://github.com/joyent/node-http-signature library (the request signing part only)

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GPG for encryption and signing

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Simple request signing library

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Helpers for signing and verifying urls with support for temporary and single-use urls.

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