Libraries tagged by eSignature

Lightweight PHP SDK for connecting to the AccordFlow Signature API.

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A simple library to work with JSON Web Token and JSON Web Signature

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Fork of daverandom/callback-validator - Tools for validating callback signatures

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Signing, validations digital signature with kalkan (NCALayer, NCANode)

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Build Sigstore bundles (.sigstore.json) in PHP — the counterpart to verification, emitting DSSE and message-signature bundles

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This library verifies that the signature of the JWT is valid, comes from a desired application, and that the token has not been tampered with or expired.

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Fadada Agreement & Signature Cloud API PHP-SDK

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PHP DNF (Disjunctive Normal Form) Signature Compatibility Solver

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Use DocSpring's API to programmatically fill out PDF forms, convert HTML to PDFs, merge PDFs, or request legally binding e-signatures.

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Tools for validating callback signatures

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PHP Bitcoin library with functions for transactions, signatures, serialization, Random/Deterministic ECDSA keys, blocks, RPC bindings

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PHP SDK and API client for the Box API v2024.0, supporting OAuth2 and JWT/S2S authentication, file and folder operations, uploads, webhook signature verification, typed models, and PSR-3 logging.

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A PHP Parser for CFONB 120 signatures, 240 transfers. Helper for EBICS.

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ECDSA signature value object with DER/JWS raw format conversion and curve-order validation. For Cloud KMS/HSM-based JWT signing where OpenSSL/KMS returns DER but JWT (RFC 7518) requires raw format.

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Sign and verify PSR-7 HTTP messages with HMAC and RSA keys

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