GB/T 35276-2017 in English
VALIDInformation security technology―SM2 cryptography algorithm usage specification
- Issued on:2017-12-29
- Implemented on:2018-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
| Standard No: | GB/T 35276-2017 |
| Document status: | VALID |
| Title in English: | Information security technology―SM2 cryptography algorithm usage specification |
| Title in Chinese: | 信息安全技术 SM2密码算法使用规范 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-12-29 |
| Implemented on: | 2018-07-01 |
| ICS Classification: | 35.040-Character sets and information coding |
| Chinese Classification: | L80-Data encryption |
| Professional Classification: | GB-National Standard |
| Related Keywords: | information security technology ― sm2 cryptography algorithm
sm2 algorithm international standards algorithm type elliptic curve public key cryptography rfc key agreement digital signature algorithm key pair generation sm2 |
| Related Topics: | password
SM2 GB/T 35276 GBT35276 GB/T 35276-2017 Safety belt usage regulations gbt35276-2017 gbt35276 gb / t35276 |
《GB/T 35276-2017信息安全技术 SM2密码算法使用规范》由TC260（全国网络安全标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
1. Standard Overview
SM2 cryptographic algorithm is a set of asymmetric encryption algorithms defined by GB/T32918, including digital signature, key agreement and public key encryption functions. This standard (GB/T 35276-2017) aims to standardize the use and data format of SM2 algorithm.
2. Comparison of standard frameworks
| Standard dimensions | GB/T 35276—2017 | Related international standards |
|---|---|---|
| Algorithm type | Elliptic curve public key cryptography | RFC 5431 (ECDSA) |
| Core functions | Signature, encryption, key agreement | Digital Signature Algorithm (DSA) |
| Security | 256-bit security strength | NIST 130-2 recommended elliptic curve |
3. Core Technology Analysis
3.1 Key Pair Generation
SM2 private key is an integer with a length of 256 bits, satisfying 1 < k < n-1 (n is the order of the elliptic curve). SM2 public key is a point (x, y) on the elliptic curve, and each component is also 256 bits.
3.2 Data Conversion Mechanism
- Bit string to byte string: fill with zeros when less than 8 bits to ensure that the result is an integer multiple of 8.
- Byte string to bit string: convert each byte into an 8-bit binary string.
4. Implementation Recommendations
- Key Management: Update SM2 key pairs regularly to ensure secure storage of private keys.
- Preprocessing Optimization: Set user identity IDs appropriately. The default value is a 16-byte sequence (0x31-0x38).
- Security Testing: When using the SM2 algorithm for encryption and signing operations, ensure that the hash value calculation complies with the SM3 standard.
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