Overview
Description
Topics
The AES library and SHA hash function library for RL78/G24 FAA are now compatible with IAR C/C++ Compiler.
While network technology and digital devices have improved in terms of performance and convenience, there is also a growing concern about security issues such as data eavesdropping, tampering, privacy violations, and unauthorized copying of copyrighted works.
Renesas provides robust cryptographic libraries for the development of various systems that require security.
Features
- RZ/A1H Group Cryptographic Software Library
- RSA Library
- AES Library
- SHA Library
- Learn More
Release Information
| Target Device | Product Name | Supported Compilers | Latest Ver. / Released | Providing Method |
|---|---|---|---|---|
| RZ/A1H Group | RZ/A1H Group Cryptographic Software Library | Arm® Compiler v5 | Latest Ver.: V.1.01 Release 00 Released: Jan. 26, 2015 | Contact us |
| RL78 Family *1 | RSA Library for RL78 Family | CC-RL, IAR, LLVM | Latest Ver.: V.2.01 Release 00 Released: Jun. 30, 2022 | Download: RL78 Family RSA Library: Introduction Guide Rev.2.01 - Sample Code (ZIP) |
| AES Library for RL78 Family | Latest Ver.: V.2.01 Release 00 Released: Jun. 30, 2022 | Download: RL78 Family AES Library: Introduction Guide Rev.2.01 - Sample Code (ZIP) | ||
| SHA Library for RL78 Family | Latest Ver.: V.2.03 Release 00 Released: Aug. 1, 2025 | Download: RL78 Family SHA Hash Function Library: Introduction Guide Rev.2.03 - Sample Code (ZIP) | ||
| RL78/G24 FAA *1 | AES Library for RL78/G24 FAA | CC-RL, IAR | Latest Ver.: V.1.01 Release 00 Released: Aug. 1, 2025 | Download: RL78/G24 FAA AES Library Introduction Guide Rev.1.01 - Sample Code (ZIP) |
| SHA Library for RL78/G24 FAA *2 | Latest Ver.: V.2.03 Release 00 Released: Aug. 1, 2025 | Download: RL78 Family SHA Hash Function Library: Introduction Guide Rev.2.03 - Sample Code (ZIP) | ||
| RX Family | RSA Library for RX Family | CC-RX, GCC, IAR | Latest Ver.: V.1.05 Release 00 Released: Apr. 21, 2025 | Download: RX Family RSA Library Firmware Integration Technology Rev.1.05 - Sample Code (ZIP) |
| AES Library for RX Family | Latest Ver.: V.1.08 Release 00 Released: Apr. 21, 2025 | Download: RX Family AES Library Firmware Integration Technology Rev.1.08 - Sample Code (ZIP) | ||
| SHA Library for RX Family | Latest Ver.: V.1.06 Release 00 Released: Apr. 21, 2025 | Download: RX Family SHA Library Firmware Integration Technology Rev.1.06 - Sample Code (ZIP) |
*1.It can not be used for automotive applications.
*2.This library is included in the release package of the SHA Library for RL78 family.
Target Devices
Documentation
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| Type | Title | Date |
| Application Note | PDF 522 KB 日本語 | |
| Application Note | PDF 549 KB 日本語 | |
| Application Note | PDF 345 KB 日本語 | |
| Application Note | PDF 273 KB 日本語 | |
| Application Note | PDF 352 KB 日本語 | |
| Application Note | PDF 1.01 MB 日本語 | |
| Application Note | PDF 303 KB 日本語 | |
| Application Note | PDF 245 KB 日本語 | |
| Tool News - Note | PDF 121 KB 日本語 | |
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Design & Development
Sample Code
Sample Code
Filters
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|---|---|---|
| Type | Title | Date Date |
| Sample Code |
[Toolchains=CC-RL|V1.09.00;CC-RL|V1.12.01;IAR Compiler for RL78|v.4.20.1.2260;IAR Compiler for RL78|v.5.20.1.2826;LLVM for Renesas RL78|10.0.0.202203]
ZIP
12.00 MB
Application:
Industrial
Compiler:
CC-RL, ICCRL78, LLVM
Function:
Driver or Library, Security
IDE:
CS+, e2 studio, IAR EWRL78
|
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| Sample Code |
[Toolchains=CC-RL|V1.12.01;IAR Compiler for RL78|v.5.20.1.2826]
ZIP
6.52 MB
Application:
Industrial, Security
Compiler:
CC-RL, ICCRL78
Function:
Driver or Library, Security
IDE:
CS+ for CC, e2 studio, IAR EWRL78
|
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| Sample Code |
[Toolchains=CC-RX|V3.04.00;GNURX|8.3.0.202104;IAR Compiler for RX|v.4.20.3]
ZIP
9.44 MB
Application:
Consumer Electronics, Industrial
Compiler:
CC-RX, GNURX
Function:
Security, Driver or Library
IDE:
e2 studio, IAR EWRX, ICCRX
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| Sample Code |
[Toolchains=CC-RX|V3.04.00;GNURX|8.3.0.202104;IAR Compiler for RX|v.4.20.3]
ZIP
9.36 MB
Application:
Consumer Electronics, Industrial
Compiler:
CC-RX, GNURX, ICCRX
Function:
Security, Driver or Library
IDE:
e2 studio
|
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| Sample Code |
ZIP
8.77 MB
Application:
Consumer Electronics
Compiler:
CC-RX, GNURX, ICCRX
Function:
Driver or Library, Security
IDE:
CS+, e2 studio, IAR EWRX
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| Sample Code |
[Toolchains=CC-RL|V1.09.00;LLVM for Renesas RL78|10.0.0.202203;IAR Compiler for RL78|v.4.20.1.2260]
ZIP
7.10 MB
Application:
Industrial
Compiler:
CC-RL, ICCRL78, LLVM for Renesas RL78
Function:
Security
IDE:
CS+ for CC, e2 studio, IAR EWRL78
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| Sample Code |
[Toolchains=CC-RL|V1.09.00;LLVM for Renesas RL78|10.0.0.202203;IAR Compiler for RL78|v.4.20.1.2260]
ZIP
7.14 MB
Application:
Industrial
Compiler:
CC-RL, ICCRL78, LLVM for Renesas RL78
Function:
Security, Driver or Library
IDE:
CS+ for CC, e2 studio, IAR EWRL78
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Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Additional Details
Purpose
- Electronic Commerce
- Network Security
- Device Authentication
- Content Protection
- Tamper-Proofing
- Confidential Information Protection
etc.
Function
We offer cryptographic libraries for Renesas MCUs that perform software processing.
Library
| Type | Function | Target Devices | Supported Compilers |
|---|---|---|---|
| AES Library | AES encryption with a key length of 128/256 bits. Supported operation modes are ECB, CBC mode, and GCM (Galois/Counter mode). | RL78 Family *1 | CC-RL, IAR, LLVM |
| RL78/G24 FAA *1 *2 | CC-RL, IAR | ||
| RX Family | CC-RX, GCC, IAR | ||
| Hash Function Library | SHA-1 and SHA-256. Initial values are set and padding data is added within the library for ease of use. | RL78 Family *1 | CC-RL, IAR, LLVM |
| RL78/G24 FAA *1 *3 | CC-RL, IAR | ||
| RX Family | CC-RX, GCC, IAR | ||
| RSA Library | Data length 2048 bits Encryption/decryption method RSAES-PKCS1-V1_5 Signature generation/verification method RSASSA-PKCS1-V1_5 Exponential remainder operation | RL78 Family *1 | CC-RL, IAR, LLVM |
| RX Family | CC-RX, GCC, IAR |
*1. It can not be used for automotive applications.
*2. It does not support GCM (Galois/Counter Mode).
*3. It only supports SHA-256.
Related Products
Driver
| Product Name | Function | Target Devices |
|---|---|---|
| AES Coprocessor Driver | High-speed execution of AES algorithm with HW | RX140(Part of a product), RX63N, RX64M, RX71M, and RX651/RX65N (ROM 1 Mbyte) groups |
| RNG Driver | Random Number Generate | RX140(Part of a product), RX63N, RX64M, RX71M, and RX651/RX65N (ROM 1 Mbyte) groups |
| SHA Coprocessor Driver | High-speed execution of SHA algorithm with HW | RX63N, RX64M, RX71M, and RX651/RX65N (ROM 1 Mbyte) groups |
| DES Coprocessor Driver | High-speed execution of DES algorithm with HW | RX63N, RX64M, RX71M, and RX651/RX65N (ROM 1 Mbyte) groups |
Image
How to Obtain
Cryptographic libraries for Renesas MCUs that perform software processing can be downloaded from this page (except for some MCUs). Please download and use the sample code.
Cryptographic libraries or hardware accelerator drivers that are not available for download are provided to customers who are using or planning to use Renesas MCUs. Please contact your Renesas Electronics sales representative.
Target Devices
- RL78 Family * It can not be used for automotive applications
- RX Family
Please refer to Function for details.