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BouncyCastle

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Java Tech Enthusiast
Java Tech Enthusiast
Feb 14, 2025 · Information Security

Electronic Signature Implementation Using Java and PDF

This tutorial explains China’s electronic‑seal regulations, shows how to generate a CA‑based X.509 certificate and a custom seal image with BouncyCastle, and demonstrates signing a PDF in Java using iText 5 to embed a visible seal and a verifiable digital signature.

BouncyCastleDigital CertificateJava
0 likes · 16 min read
Electronic Signature Implementation Using Java and PDF
Fulu Network R&D Team
Fulu Network R&D Team
Sep 23, 2020 · Information Security

Generating and Using P12 Certificates with BouncyCastle in .NET Core

This article explains how to generate PKCS#12 (p12) certificates using BouncyCastle in .NET Core, extract keys with OpenSSL, install the certificates on Windows, and demonstrates encryption and decryption with the generated keys, providing complete code samples and step‑by‑step instructions.

.NET CoreBouncyCastleC
0 likes · 15 min read
Generating and Using P12 Certificates with BouncyCastle in .NET Core
Fulu Network R&D Team
Fulu Network R&D Team
Sep 11, 2020 · Information Security

Symmetric Encryption Algorithms in .NET Core Using BouncyCastle

This article introduces symmetric encryption algorithms such as DES, 3DES, and AES, explains their principles, advantages and drawbacks, and provides complete .NET Core sample code using the BouncyCastle library for encryption and decryption with various padding modes.

.NET Core3DESAES
0 likes · 21 min read
Symmetric Encryption Algorithms in .NET Core Using BouncyCastle
Fulu Network R&D Team
Fulu Network R&D Team
Jun 29, 2020 · Information Security

Comprehensive Guide to Message Digest, MAC, and Digital Signature Algorithms in .NET Core with BouncyCastle

This article introduces various cryptographic primitives—including MD, SHA, MAC, and digital signature algorithms such as RSA, DSA, and ECDSA—explains their usage and security considerations, and provides complete .NET Core code examples using the BouncyCastle library for implementation.

.NET CoreBouncyCastleECDSA
0 likes · 24 min read
Comprehensive Guide to Message Digest, MAC, and Digital Signature Algorithms in .NET Core with BouncyCastle