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crypt_1 BAB28FA5A3582BC95E463D0E7D8CABF9
iv_1    8EE8A2C9F308FB91264B993F8DFDA5EC

hash = sha1(header[0:0x40])
buf1 = crypt_1
buf2 = hash[0:0x10]

aes(buf1, size=0x10, type=1, key=0, iv=iv_1)
aes_reset_key()
aes(buf2, size=0x10, type=0, key=buf1, iv=[0]*16)
aes_reset_key()
memcmp(header[0x40:0x50], buf2])

if type!=0 key is not set (??)

header examples

00: 38 39 30 30 31 2E 30 03 00 00 00 00 00 70 EF 00
10: 00 70 EF 00 80 70 EF 00 0A 0C 00 00 DC 76 C6 77
20: BB EA 47 2D 86 57 60 87 41 35 59 21 AC 15 5E 17
30: 59 23 4D 76 93 96 63 D0 26 B0 A0 EB 00 00 02 00
40: 84 1B EC 18 20 0D C6 4E F3 85 8E 7A A0 EE 0C 63

00: 38 39 30 30 31 2E 30 03 00 00 00 00 70 A6 32 00
10: 70 A6 32 00 F0 A6 32 00 0A 0C 00 00 94 F0 9E 14
20: E4 C6 4A 15 9B 89 18 8C 25 00 43 44 2B 3B 17 5A
30: AE 8E 45 6D B1 58 55 CB A2 B4 37 62 00 00 02 00
40: B3 00 2A 61 22 09 7E F8 2B 59 27 F0 BE 49 87 E0