PEM鍵構造・暗号化フォーマット技術仕様ガイド
ASN.1 DERデコード、PKCS#1とPKCS#8の構造的差異、公開鍵指紋（フィンガープリント）計算、公開鍵抽出の技術解説。
ASN.1 DER Length: 1008 bytes
キー構造種別RSA PRIVATE KEY
鍵長 / 楕円曲線サイズ2048-bit Modulus
暗号アルゴリズムRSA (PKCS#1 / PKCS#8)
SHA-256 指紋 (Fingerprint)-
PEMキー貼り付け (公開鍵または秘密鍵)1426 chars
抽出された公開鍵 (SPKI PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0YqL3l+Y7i8Q6K6S7h7G 1B5v4W8d3n+K3e7Y8a9c2d1e0f4g5h6i7j8k9l0m1n2o3p4q5r6s7t8u9v0w1x2y 3z4A5B6C7D8E9F0G1H2I3J4K5L6M7N8O9P0Q1R2S3T4U5V6W7X8Y9Z0a1b2c3d4e 5f6g7h8i9j0k1l2m3n4o5p6q7r8s9t0u1v2w3x4y5z6A7B8C9D0E1F2G3H4I5J6K 7L8M9N0O1P2Q3R4S5T6U7V8W9X0Y1Z2a3b4c5d6e7f8g9h0i1j2k3l4m5n6o7p8q 9r0s1t2u3v4w5x6y7z8A9B0C1D2E3F4G5H6I7J8K9L0M1N2O3P4Q5R6S7T8U9V0W 1X2Y3Z0a1b2c3d4e5f6g7h8i9j0kAgMBAAE= -----END PUBLIC KEY-----
Zero Cryptographic Upload
Your production RSA and EC private keys never leave your device. All Base64 DER decoding and fingerprinting occur in your browser sandbox.
Multi-Standard ASN.1 Support
Seamlessly handles PKCS#1 RSA keys, PKCS#8 universal envelopes, SPKI public certificates, and SEC1 elliptic curve structures.
SHA-256 Fingerprinting
Automatically generates standard colon-delimited SHA-256 key fingerprints for quick verification with SSH hosts and TLS certificates.