Latest Posts

  • uncategorized

    wolfTPM STM32Cube Expansion Package for STM32 is now available!

    • shizuka
    wolfTPM is a portable TPM 2.0 stack with backward API compatibility designed for embedded use, and with the new STM32Cube Expansion Pack, STM32 developers are given a smooth sailing route to wolfTPM integration. wolfTPM has had HAL IO Callback examples for STM32CubeMX for a while now, and supports SPI and...
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  • uncategorized

    wolfTPM based Root of Trust for Secure Boot

    • shizuka
    wolfTPM is a portable TPM 2.0 stack with backward API compatibility designed for embedded use, and the newly released wolfTPM v3.0.0 provides examples for Secure Boot solutions to store a Root of Trust in non-volatile (NV) memory. Secure Boot for your microcontroller is essential to protect against malware during the...
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  • uncategorized

    wolfTPM support for sealing/unsealing based on externally signed PCR

    • shizuka
    wolfTPM is a portable TPM 2.0 stack with backward API compatibility designed for embedded use, and the newly released wolfTPM v3.0.0 includes support for sealing/unsealing secrets to authority signed Platform Configuration Registers (PCR’s). One of the most important features of the TPM 2.0 specification is the resolution of PCR brittleness....
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  • wolssl

    Thumb2 Gets Assembly Code for AES and SHA-2 Algorithms in WolfSSL 5.6.4

    • shizuka
    In an effort to improve our Thumb2 support for Cortex-M4 and the like, wolfSSL 5.6.4 includes assembly code for the AES-ECB/CBC/CTR/GCM, SHA-256 and SHA-512 algorithms. Of particular interest is the AES-CBC and AES-GCM performance improvements you will see when changing from the C code implementations in wolfSSL 5.6.3. Take for...
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  • wolssl

    Thumb2 and Arm32 Public Key Gets Massive Speedup in wolfSSL 5.6.4

    • shizuka
    In the latest release of wolfSSL, version 5.6.4, a significant effort has been put into improving the performance of public key algorithms for 32-bit ARM chips. wolfSSL now has arguably the best performance for P256 ECC, Curve25519 and Ed25519 for Cortex-M4 and Cortex-A32. With highly optimized assembly implementations of multiplication...
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  • uncategorized

    wolfCrypt AES-XTS Acceleration on x86-64

    • shizuka
    With our recent 5.6.4 release of wolfSSL/wolfCrypt, AES-XTS gains a newly optimized implementation for modern x86-64 CPUs. AES-XTS, standardized in IEEE P1619-2007 and NIST SP800-38E, and typically used for encrypting storage. By leveraging AES-NI and AVX vectorized instructions, sustained throughput now exceeds 1.5 bytes per cycle for 256 bit keys,...
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  • uncategorized

    wolfCLU v0.1.4

    • shizuka
    wolfCLU version 0.1.4 is now available! In this release of the wolfSSL command line utility (CLU) there were additions to the x509 command, more subject alternative name attributes supported, and a couple of minor fixes / maintenance items. The command line utility is a great time saver for quickly creating...
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  • uncategorized

    wolfSSL is extending wc_PKCS7_VerifySignedData streaming

    • shizuka
    wolfSSL, a TLS library for embedded devices, not only handles the TLS protocol, but also supports bundle file handling functions specified by PKCS#7 (bundle file encoding, decoding, content extraction, signature verification). wolfSSL continues to extend this PKCS#7 handling functionality. wolfSSL is currently extending our wc_PKCS7_VerifySignedData() API to handle PKCS#7 bundle...
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