| The key, message, and signature come from Example 1 of: | 
 | ftp://ftp.rsa.com/pub/rsalabs/tmp/pkcs1v15sign-vectors.txt | 
 |  | 
 | (The algorithm DER was synthesized to match, and the signature enclosed in a BIT STRING). | 
 |  | 
 | It uses an RSA key with modulus length of 1024 bits, PKCS#1 v1.5 padding, and | 
 | SHA-1 as the digest. | 
 |  | 
 |  | 
 | $ openssl asn1parse -i < [PUBLIC KEY] | 
 |     0:d=0  hl=3 l= 159 cons: SEQUENCE           | 
 |     3:d=1  hl=2 l=  13 cons:  SEQUENCE           | 
 |     5:d=2  hl=2 l=   9 prim:   OBJECT            :rsaEncryption | 
 |    16:d=2  hl=2 l=   0 prim:   NULL               | 
 |    18:d=1  hl=3 l= 141 prim:  BIT STRING         | 
 | -----BEGIN PUBLIC KEY----- | 
 | MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQClbkoOcBAXWJpRh9x+qEHRVvLsDjatUqRN/rH | 
 | mH3rZkdjFEFb/7bFitMDyg6EqiKOU3/Umq3KRy7MHzqv84LHf1c2VCAltWyuLbfXWce9jd8CSHL | 
 | I8Jwpw4lmOb/idGfEFrMLT8Ms18pKA4Thrb2TE7yLh4fINDOjP+yJJvZohNwIDAQAB | 
 | -----END PUBLIC KEY----- | 
 |  | 
 | $ openssl asn1parse -i < [ALGORITHM] | 
 |     0:d=0  hl=2 l=  13 cons: SEQUENCE           | 
 |     2:d=1  hl=2 l=   9 prim:  OBJECT            :sha1WithRSAEncryption | 
 |    13:d=1  hl=2 l=   0 prim:  NULL               | 
 | -----BEGIN ALGORITHM----- | 
 | MA0GCSqGSIb3DQEBBQUA | 
 | -----END ALGORITHM----- | 
 |  | 
 | -----BEGIN DATA----- | 
 | zch9oiPXht87ReC7vHITJtHuKvgGzDFUdcxvDZxm4bYjcdRc4jkuGskoRMMQEC8Vag2NUsH0xAu | 
 | jqmUJV4bLdpdXplY7qVj+0LzJhOi1F6PV9RWyO4pB50qoZ2k/kN+wYabobfqu5kRywA5fIJRXKc | 
 | vr538Gznjgj0CY+6QfnWGTwDF+i2DUtghKy0LSnjgIo7w3LYXjMRcPy/fMctC3HClmSLOk0Q9BY | 
 | pXQgHqmJcqydE/Z6o/SI8QlNwKYKL0WvgJUbxMP0uM7k20mduCK7RtzMYt1CgFn0A== | 
 | -----END DATA----- | 
 |  | 
 | $ openssl asn1parse -i < [SIGNATURE] | 
 |     0:d=0  hl=3 l= 129 prim: BIT STRING         | 
 | -----BEGIN SIGNATURE----- | 
 | A4GBAGvDoGZWhCkwokfjDVhktNgZI2unxollhirX28TiSvKOhrtTHwM1i+X7dHd8YIb4UMrviT8 | 
 | Nb8wtDJHsATaTtOoAuAzUmqxOy1+JEa/lOa2kqPOCPR0T5HLRSQVHxlnHYX89JAh9228rcglhZ/ | 
 | wJfKsY6aRY/LY0zc6O41iUxITX | 
 | -----END SIGNATURE----- |